A199370 -id:A199370 - cp's OEIS frontend

A200338 Decimal expansion of least x > 0 satisfying x^2 + 1 = tan(x).

1, 1, 7, 2, 0, 9, 3, 6, 1, 7, 2, 8, 5, 6, 6, 9, 0, 3, 9, 6, 8, 7, 8, 1, 8, 7, 9, 5, 8, 1, 0, 8, 9, 8, 8, 0, 4, 0, 2, 4, 2, 4, 5, 7, 0, 8, 8, 0, 2, 7, 6, 3, 7, 1, 7, 6, 0, 1, 8, 6, 6, 3, 6, 7, 1, 2, 1, 8, 6, 6, 3, 4, 6, 0, 7, 6, 4, 1, 2, 2, 8, 3, 6, 5, 4, 5, 6, 1, 1, 2, 2, 8, 6, 7, 2, 3, 0, 3, 2

Offset: 1

Clark Kimberling, Nov 16 2011

For many choices of a,b,c, there is exactly one x satisfying a*x^2 + b*x + c = tan(x) and 0 < x < Pi/2.
Guide to related sequences, with graphs included in Mathematica programs:
a.... b.... c.... x
... 0.... 1.... A200338
... 0.... 2.... A200339
... 0.... 3.... A200340
... 0.... 4.... A200341
... 1.... 1.... A200342
... 1.... 2.... A200343
... 1.... 3.... A200344
... 1.... 4.... A200345
... 2.... 1.... A200346
... 2.... 2.... A200347
... 2.... 3.... A200348
... 2.... 4.... A200349
... 3.... 1.... A200350
... 3.... 2.... A200351
... 3.... 3.... A200352
... 3.... 4.... A200353
... 4.... 1.... A200354
... 4.... 2.... A200355
... 4.... 3.... A200356
... 4.... 4.... A200357
... 0.... 1.... A200358
... 0.... 3.... A200359
... 1.... 1.... A200360
... 1.... 2.... A200361
... 1.... 3.... A200362
... 1.... 4.... A200363
... 2.... 1.... A200364
... 2.... 3.... A200365
... 3.... 1.... A200366
... 3.... 2.... A200367
... 3.... 3.... A200368
... 3.... 4.... A200369
... 4.... 1.... A200382
... 4.... 3.... A200383
... 0.... 1.... A200384
... 0.... 2.... A200385
... 0.... 4.... A200386
... 1.... 1.... A200387
... 1.... 2.... A200388
... 1.... 3.... A200389
... 1.... 4.... A200390
... 2.... 1.... A200391
... 2.... 2.... A200392
... 2.... 3.... A200393
... 2.... 4.... A200394
... 3.... 1.... A200395
... 3.... 2.... A200396
... 3.... 4.... A200397
... 4.... 1.... A200398
... 4.... 2.... A200399
... 4.... 3.... A200400
... 4.... 4.... A200401
... 0.... 1.... A200410
... 0.... 3.... A200411
... 1.... 1.... A200412
... 1.... 2.... A200413
... 1.... 3.... A200414
... 1.... 4.... A200415
... 2.... 1.... A200416
... 2.... 3.... A200417
... 3.... 1.... A200418
... 3.... 2.... A200419
... 3.... 3.... A200420
... 3.... 4.... A200421
... 4.... 1.... A200422
... 4.... 3.... A200423
.. -1.... 1.... A200477
.. -1.... 2.... A200478
.. -1.... 3.... A200479
.. -1.... 4.... A200480
.. -2.... 1.... A200481
.. -2.... 2.... A200482
.. -2.... 3.... A200483
.. -2.... 4.... A200484
.. -3.... 1.... A200485
.. -3.... 2.... A200486
.. -3.... 3.... A200487
.. -3.... 4.... A200488
.. -4.... 1.... A200489
.. -4.... 2.... A200490
.. -4.... 3.... A200491
.. -4.... 4.... A200492
.. -1.... 1.... A200493
.. -1.... 2.... A200494
.. -1.... 3.... A200495
.. -1.... 4.... A200496
.. -2.... 1.... A200497
.. -2.... 3.... A200498
.. -3.... 1.... A200499
.. -3.... 2.... A200500
.. -3.... 3.... A200501
.. -3.... 4.... A200502
.. -4.... 1.... A200584
.. -4.... 3.... A200585
.. -1.... 2.... A200586
.. -1.... 3.... A200587
.. -1.... 4.... A200588
.. -2.... 1.... A200589
.. -2.... 2.... A200590
.. -2.... 3.... A200591
.. -2.... 4.... A200592
.. -3.... 1.... A200593
.. -3.... 2.... A200594
.. -3.... 4.... A200595
.. -4.... 1.... A200596
.. -4.... 2.... A200597
.. -4.... 3.... A200598
.. -4.... 4.... A200599
.. -1.... 1.... A200600
.. -1.... 2.... A200601
.. -1.... 3.... A200602
.. -1.... 4.... A200603
.. -2.... 1.... A200604
.. -2.... 3.... A200605
.. -3.... 1.... A200606
.. -3.... 2.... A200607
.. -3.... 3.... A200608
.. -3.... 4.... A200609
.. -4.... 1.... A200610
.. -4.... 3.... A200611
Suppose that f(x,u,v) is a function of three real variables and that g(u,v) is a function defined implicitly by f(g(u,v),u,v)=0.  We call the graph of z=g(u,v) an implicit surface of f.
For an example related to A200338, take f(x,u,v) = x^2 + u*x + v - tan(x) and g(u,v) = a nonzero solution x of f(x,u,v)=0. If there is more than one nonzero solution, care must be taken to ensure that the resulting function g(u,v) is single-valued and continuous.  A portion of an implicit surface is plotted by Program 2 in the Mathematica section.

			x=1.17209361728566903968781879581089880...

Index entries for transcendental numbers.

Cf. A197737, A198414, A198755, A198866, A199170, A199370, A199429, A199597, A199949.

(* Program 1:  A200338 *)
a = 1; b = 0; c = 1;
f[x_] := a*x^2 + b*x + c; g[x_] := Tan[x]
Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, 1.1, 1.2}, WorkingPrecision -> 110]
RealDigits[r]  (* A200338 *)
(* Program 2: implicit surface of x^2+u*x+v=tan(x) *)
f[{x_, u_, v_}] := x^2 + u*x + v - Tan[x];
t = Table[{u, v, x /. FindRoot[f[{x, u, v}] == 0, {x, 0, 1.57}]}, {u, 0, 5, .1}, {v, 0, 5, .1}];
ListPlot3D[Flatten[t, 1]]  (* for A200388 *)

solve(x=1,1.2,x^2+1-tan(x)) \\ Charles R Greathouse IV, Mar 23 2022

A199597 Decimal expansion of x > 0 satisfying x^2 + x*cos(x) = sin(x).

Original entry on oeis.org

1, 1, 8, 8, 1, 8, 5, 1, 3, 4, 4, 5, 1, 4, 3, 8, 8, 0, 3, 2, 1, 7, 8, 1, 0, 9, 7, 2, 9, 0, 7, 6, 5, 2, 5, 9, 7, 3, 8, 3, 2, 4, 2, 5, 6, 1, 2, 8, 4, 1, 4, 7, 1, 9, 4, 1, 8, 2, 3, 9, 5, 2, 8, 3, 2, 3, 4, 1, 8, 6, 0, 9, 9, 1, 3, 4, 2, 2, 9, 6, 0, 3, 4, 2, 6, 1, 8, 0, 9, 6, 9, 1, 8, 3, 4, 8, 8, 4, 3, 0

Offset: 1

Clark Kimberling, Nov 08 2011

For many choices of a,b,c, there is exactly one x>0 satisfying a*x^2+b*x*cos(x)=c*sin(x).
Guide to related sequences, with graphs included in Mathematica programs:
a.... b.... c.... x
... 1.... 2.... A199597
... 1.... 3.... A199598
... 1.... 4.... A199599
... 2.... 1.... A199600
... 2.... 3.... A199601
... 2.... 4.... A199602
... 3.... 0.... A199603, A199604
... 3.... 1.... A199605, A199606
... 3.... 2.... A199607, A199608
... 3.... 3.... A199609, A199610
... 4.... 0.... A199611, A199612
... 4.... 1.... A199613, A199614
... 4.... 2.... A199615, A199616
... 4.... 3.... A199617, A199618
... 4.... 4.... A199619, A199620
... 1.... 0.... A199621
... 1.... 2.... A199622
... 1.... 3.... A199623
... 1.... 4.... A199624
... 2.... 1.... A199625
... 2.... 3.... A199661
... 1.... 0.... A199662
... 1.... 2.... A199663
... 1.... 3.... A199664
... 1.... 4.... A199665
... 2.... 0.... A199666
... 2.... 1.... A199667
... 2.... 3.... A199668
... 2.... 4.... A199669
.. -1.... 0.... A003957
.. -1.... 1.... A199722
.. -1.... 2.... A199721
.. -1.... 3.... A199720
.. -1.... 4.... A199719
.. -2.... 1.... A199726
.. -2.... 2.... A199725
.. -2.... 3.... A199724
.. -2.... 4.... A199723
.. -3.... 1.... A199730
.. -3.... 2.... A199729
.. -3.... 3.... A199728
.. -3.... 4.... A199727
.. -4.... 1.... A199737. A199738
.. -4.... 2.... A199735, A199736
.. -4.... 3.... A199733, A199734
.. -4.... 4.... A199731. A199732
.. -1.... 1.... A199742
.. -1.... 2.... A199741
.. -1.... 3.... A199740
.. -1.... 4.... A199739
.. -2.... 1.... A199776
.. -2.... 3.... A199775
.. -3.... 1.... A199780
.. -3.... 2.... A199779
.. -3.... 3.... A199778
.. -3.... 4.... A199777
.. -4.... 1.... A199782
.. -4.... 3.... A199781
.. -4.... 1.... A199786
.. -4.... 2.... A199785
.. -4.... 3.... A199784
.. -4.... 4.... A199783
.. -3.... 1.... A199789
.. -3.... 2.... A199788
.. -3.... 4.... A199787
.. -2.... 1.... A199793
.. -2.... 2.... A199792
.. -2.... 3.... A199791
.. -2.... 4.... A199790
.. -1.... 1.... A199797
.. -1.... 2.... A199796
.. -1.... 3.... A199795
.. -1.... 4.... A199794
.. -4.... 1.... A199873
.. -4.... 3.... A199872
.. -3.... 1.... A199871
.. -3.... 2.... A199870
.. -3.... 3.... A199869
.. -3.... 4.... A199868
.. -2.... 1.... A199867
.. -2.... 3.... A199866
.. -1.... 1.... A199865
.. -1.... 2.... A199864
.. -1.... 3.... A199863
.. -1.... 4.... A199862
Suppose that f(x,u,v) is a function of three real variables and that g(u,v) is a function defined implicitly by f(g(u,v),u,v)=0.  We call the graph of z=g(u,v) an implicit surface of f.
For an example related to A199597, take f(x,u,v)=x^2+u*x*cos(x)-v*sin(x) and g(u,v) = a nonzero solution x of f(x,u,v)=0.  If there is more than one nonzero solution, care must be taken to ensure that the resulting function g(u,v) is single-valued and continuous.  A portion of an implicit surface is plotted by Program 2 in the Mathematica section.

			1.1881851344514388032178109729076525973...

Index entries for transcendental numbers.

Cf. A199370, A199170, A198866, A198755, A198414, A197737, A199429.

(* Program 1:  A199597 *)
a = 1; b = 1; c = 2;
f[x_] := a*x^2 + b*x*Cos[x]; g[x_] := c*Sin[x]
Plot[{f[x], g[x]}, {x, -Pi, Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, 1.18, 1.19}, WorkingPrecision -> 110]
RealDigits[r]  (* A199597 *)
(* Program 2: impl. surf. x^2+u*x*cos(x)=v*sin(x) *)
f[{x_, u_, v_}] := x^2 + u*x*Cos[x] - v*Sin[x];
t = Table[{u, v, x /. FindRoot[f[{x, u, v}] == 0, {x, .5, 3}]}, {u, 0, 2}, {v, u, 20}];
ListPlot3D[Flatten[t, 1]]  (* for A199597 *)

Edited by Georg Fischer, Aug 03 2021

A199429 Decimal expansion of x>0 satisfying x^2+x*sin(x)=cos(x).

Original entry on oeis.org

6, 4, 3, 4, 3, 6, 3, 6, 4, 1, 3, 8, 0, 2, 6, 1, 5, 8, 6, 4, 2, 0, 9, 8, 9, 1, 4, 3, 0, 4, 0, 1, 3, 1, 8, 2, 6, 8, 7, 4, 4, 6, 7, 2, 4, 1, 9, 4, 5, 7, 8, 5, 1, 6, 3, 2, 3, 8, 7, 4, 9, 1, 9, 8, 5, 8, 8, 7, 5, 2, 2, 9, 2, 2, 2, 7, 2, 5, 9, 4, 1, 7, 6, 4, 1, 7, 8, 8, 8, 7, 0, 7, 8, 5, 2, 7, 8, 5, 7

Offset: 0

Clark Kimberling, Nov 06 2011

For many choices of a,b,c, there is exactly one x>0 satisfying a*x^2+b*x*sin(x)=c*cos(x).
Guide to related sequences, with graphs included in Mathematica programs:
a.... b.... c.... x
... 1.... 1.... A199429
... 1.... 2.... A199430
... 1.... 3.... A199431
... 2.... 1.... A199432
... 2.... 2.... A199433
... 2.... 3.... A199434
... 3.... 1.... A199435
... 3.... 2.... A199436
... 3.... 3.... A199437
... 1.... 1.... A199438
... 1.... 2.... A199439
... 1.... 3.... A199440
... 2.... 1.... A199441
... 2.... 3.... A199442
... 3.... 1.... A199443
... 3.... 2.... A199444
... 3.... 3.... A199445
... 1.... 1.... A199446
... 1.... 2.... A199447
... 1.... 3.... A199448
... 2.... 1.... A199449
... 2.... 2.... A199450
... 2.... 3.... A199451
... 3.... 1.... A199452
... 3.... 2.... A199453
.. -1.... 1.... A199454
.. -1.... 2.... A199455
.. -1.... 3.... A199456
.. -2... -3.... A199457
.. -2... -2.... A199458
.. -2... -1.... A199459
.. -2...  0.... A199460
.. -2...  1.... A199461
.. -2...  2.... A199462
.. -2...  3.... A199463
.. -3... -3.... A199464
.. -3... -2.... A199465
.. -3... -1.... A199466
.. -3...  0.... A199467
.. -3...  1.... A199468
.. -3...  2.... A199469
.. -3...  3.... A199470
.. -1...  1.... A199471
.. -1...  2.... A199472
.. -1...  3.... A199473
.. -2...  1.... A199503
.. -2...  3.... A199504
.. -1...  1.... A199505
.. -1...  2.... A199506
.. -1...  3.... A199507
.. -2...  1.... A199508
.. -2...  2.... A199509
.. -2...  3.... A199510
.. -3...  1.... A199511
.. -3...  2.... A199513
Suppose that f(x,u,v) is a function of three real variables and that g(u,v) is a function defined implicitly by f(g(u,v),u,v)=0.  We call the graph of z=g(u,v) an implicit surface of f.
For an example related to A199429, take f(x,u,v)=x^2+u*x*sin(x)-v*cos(x) and g(u,v) = a nonzero solution x of f(x,u,v)=0.  If there is more than one nonzero solution, care must be taken to ensure that the resulting function g(u,v) is single-valued and continuous.  A portion of an implicit surface is plotted by Program 2 in the Mathematica section.

			0.6434363641380261586420989143040131826874...

Index entries for transcendental numbers.

Cf. A199370, A199170, A198866, A198755, A198414, A197737.

(* Program 1:  A199429 *)
a = 1; b = 1; c = 1;
f[x_] := a*x^2 + b*x*Sin[x]; g[x_] := c*Cos[x]
Plot[{f[x], g[x]}, {x, -2 Pi, 2 Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, .64, .65}, WorkingPrecision -> 110]
RealDigits[r]  (* A199429 *)
(* Program 2: implicit surface: x^2+u*x*sin(x)=v*cos(x) *)
f[{x_, u_, v_}] := x^2 + u*x*Sin[x] - v*Cos[x];
t = Table[{u, v, x /. FindRoot[f[{x, u, v}] == 0, {x, 0, 1}]}, {u, 0, 10}, {v, u, 100}];
ListPlot3D[Flatten[t, 1]]  (* for A199429 *)

g(a,b,c)=solve(x=0,abs(a)+abs(b)+abs(c), my(S=sin(x),C=sqrt(1-s^2)); a*x^2+b*x*S-c*C)
g(1,1,1) \\ Charles R Greathouse IV, Feb 07 2025

A199371 Decimal expansion of x>0 satisfying x^2+x*sin(x)=2.

Original entry on oeis.org

1, 0, 4, 6, 1, 8, 6, 2, 2, 9, 5, 0, 6, 2, 9, 1, 9, 7, 7, 8, 9, 9, 6, 4, 8, 5, 7, 8, 3, 5, 9, 6, 9, 6, 3, 7, 9, 0, 8, 6, 7, 8, 8, 1, 2, 4, 8, 0, 0, 3, 0, 3, 7, 2, 5, 6, 6, 4, 1, 1, 9, 8, 6, 7, 3, 7, 8, 8, 6, 9, 9, 0, 5, 9, 2, 4, 3, 7, 8, 2, 2, 0, 8, 9, 8, 6, 0, 4, 9, 1, 9, 9, 0, 1, 1, 4, 3, 4, 7

Offset: 1

Clark Kimberling, Nov 05 2011

See A199370 for a guide to related sequences. The Mathematica program includes a graph.

			1.04618622950629197789964857835969637908678...

Index entries for transcendental numbers.

Cf. A199370.

a = 1; b = 1; c = 2;
f[x_] := a*x^2 + b*x*Sin[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -1, Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, 1.03, 1.04}, WorkingPrecision -> 110]
RealDigits[r]   (* A199371 *)

A199372 Decimal expansion of x>0 satisfying x^2+x*sin(x)=3.

Original entry on oeis.org

1, 3, 1, 4, 6, 3, 4, 1, 7, 1, 9, 8, 5, 6, 7, 8, 9, 4, 9, 0, 3, 3, 6, 4, 1, 2, 8, 2, 5, 8, 7, 7, 6, 6, 9, 2, 2, 1, 4, 3, 0, 4, 9, 5, 3, 4, 9, 4, 1, 8, 8, 2, 4, 9, 3, 6, 9, 2, 4, 1, 0, 2, 5, 7, 2, 5, 6, 5, 9, 9, 6, 9, 1, 5, 4, 7, 0, 9, 3, 7, 1, 3, 2, 9, 1, 9, 7, 5, 0, 1, 1, 2, 7, 8, 7, 8, 8, 7, 2

Offset: 1

Clark Kimberling, Nov 05 2011

See A199370 for a guide to related sequences. The Mathematica program includes a graph.

			1.3146341719856789490336412825877669221430...

Index entries for transcendental numbers.

Cf. A199370.

a = 1; b = 1; c = 3;
f[x_] := a*x^2 + b*x*Sin[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -1, Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, 1.3, 1.4}, WorkingPrecision -> 110]
RealDigits[r]  (* A199372 *)

A199373 Decimal expansion of x>0 satisfying x^2+2xsin(x)=1.

Original entry on oeis.org

5, 8, 8, 5, 9, 1, 4, 1, 0, 8, 1, 7, 1, 5, 4, 5, 0, 6, 4, 3, 1, 7, 7, 3, 6, 2, 3, 7, 1, 2, 7, 8, 6, 7, 0, 5, 4, 4, 1, 7, 7, 2, 9, 6, 6, 5, 6, 1, 2, 7, 9, 9, 0, 6, 4, 8, 0, 6, 0, 5, 9, 6, 1, 9, 5, 6, 4, 5, 9, 4, 8, 1, 3, 4, 2, 1, 9, 5, 0, 8, 3, 2, 0, 1, 2, 6, 3, 1, 4, 5, 2, 9, 6, 9, 4, 7, 6, 5, 9

Offset: 0

Clark Kimberling, Nov 05 2011

See A199370 for a guide to related sequences. The Mathematica program includes a graph.

			0.58859141081715450643177362371278670544...

Index entries for transcendental numbers.

Cf. A199370.

a = 1; b = 2; c = 1;
f[x_] := a*x^2 + b*x*Sin[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -1, Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, .58, .59}, WorkingPrecision -> 110]
RealDigits[r]  (* A199373 *)

A199374 Decimal expansion of x>0 satisfying x^2+2xsin(x)=2.

Original entry on oeis.org

8, 5, 0, 0, 7, 4, 7, 5, 9, 9, 6, 3, 1, 0, 1, 7, 0, 7, 4, 5, 0, 5, 8, 0, 6, 1, 6, 8, 2, 6, 7, 8, 1, 3, 9, 4, 1, 9, 9, 6, 6, 9, 7, 0, 2, 3, 0, 0, 2, 6, 2, 7, 3, 2, 3, 7, 6, 5, 4, 3, 7, 7, 7, 1, 4, 3, 0, 3, 2, 7, 6, 0, 1, 5, 6, 8, 7, 3, 9, 4, 2, 2, 2, 3, 9, 8, 9, 3, 2, 7, 4, 6, 7, 9, 5, 3, 0, 7, 4

Offset: 0

Clark Kimberling, Nov 05 2011

See A199370 for a guide to related sequences. The Mathematica program includes a graph.

			0.8500747599631017074505806168267813941...

Index entries for transcendental numbers.

Cf. A199370.

a = 1; b = 2; c = 2;
f[x_] := a*x^2 + b*x*Sin[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -1, Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, .85, .86}, WorkingPrecision -> 110]
RealDigits[r]  (* A199374 *)

A199375 Decimal expansion of x>0 satisfying x^2+2xsin(x)=3.

Original entry on oeis.org

1, 0, 6, 5, 5, 0, 3, 7, 7, 3, 5, 3, 6, 3, 2, 9, 2, 2, 3, 6, 9, 1, 1, 4, 3, 4, 0, 4, 8, 5, 4, 4, 2, 5, 6, 2, 5, 6, 6, 8, 6, 9, 5, 5, 7, 6, 1, 8, 5, 7, 2, 9, 5, 2, 6, 5, 9, 0, 5, 8, 5, 7, 6, 4, 6, 6, 5, 2, 5, 5, 9, 4, 7, 3, 1, 0, 7, 4, 9, 3, 7, 0, 2, 6, 5, 5, 6, 3, 9, 7, 0, 9, 8, 3, 9, 9, 2, 0, 6

Offset: 1

Clark Kimberling, Nov 05 2011

See A199370 for a guide to related sequences. The Mathematica program includes a graph.

			1.065503773536329223691143404854425625668...

Index entries for transcendental numbers.

Cf. A199370.

a = 1; b = 2; c = 3;
f[x_] := a*x^2 + b*x*Sin[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -1, 2 Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, 1.06, 1.07}, WorkingPrecision -> 110]
RealDigits[r]  (* A199375 *)

A199376 Decimal expansion of x>0 satisfying x^2+3xsin(x)=1.

Original entry on oeis.org

5, 0, 8, 1, 6, 1, 6, 5, 6, 9, 6, 8, 3, 9, 1, 9, 1, 8, 1, 2, 7, 7, 6, 7, 6, 2, 9, 3, 4, 0, 9, 9, 2, 4, 4, 6, 1, 3, 6, 4, 6, 2, 2, 3, 5, 6, 6, 3, 4, 8, 5, 0, 7, 9, 3, 7, 3, 5, 3, 6, 0, 4, 4, 1, 9, 7, 0, 5, 4, 8, 3, 2, 4, 5, 5, 9, 7, 4, 7, 6, 4, 0, 3, 1, 3, 4, 8, 5, 0, 1, 5, 8, 1, 2, 5, 5, 9, 6, 4

Offset: 0

Clark Kimberling, Nov 05 2011

See A199370 for a guide to related sequences. The Mathematica program includes a graph.

			0.5081616569683919181277676293409924461...

Index entries for transcendental numbers.

a = 1; b = 3; c = 1;
f[x_] := a*x^2 + b*x*Sin[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -1, 2 Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, .50, .51}, WorkingPrecision -> 110]
RealDigits[r]    (* A199376 *)

solve(x=0,1,x^2+3*x*sin(x)-1) \\ Charles R Greathouse IV, Dec 28 2011

A199377 Decimal expansion of x>0 satisfying x^2+3xsin(x)=2.

Original entry on oeis.org

7, 3, 1, 3, 0, 6, 0, 7, 2, 6, 9, 9, 4, 8, 0, 6, 1, 6, 8, 6, 0, 5, 5, 7, 1, 0, 6, 4, 2, 2, 8, 8, 1, 9, 4, 9, 9, 4, 3, 4, 4, 4, 5, 0, 8, 8, 9, 0, 1, 4, 8, 9, 2, 6, 0, 2, 0, 0, 4, 4, 3, 1, 9, 6, 9, 7, 5, 9, 7, 8, 8, 3, 8, 1, 3, 5, 6, 3, 5, 4, 1, 3, 4, 6, 0, 2, 2, 8, 2, 9, 3, 8, 5, 0, 1, 6, 6, 4, 5

Offset: 0

Clark Kimberling, Nov 05 2011

See A199370 for a guide to related sequences. The Mathematica program includes a graph.

			0.731306072699480616860557106422881949943444...

Index entries for transcendental numbers.

Cf. A199370.

a = 1; b = 3; c = 2;
f[x_] := a*x^2 + b*x*Sin[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -1, 2 Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, .73, .74}, WorkingPrecision -> 110]
RealDigits[r]  (* A199377 *)

cp's OEIS Frontend

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