cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A199157 Decimal expansion of x>0 satisfying 3*x^2+2*sin(x)=3.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Nov 03 2011

Keywords

Comments

See A198866 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			negative: -1.280117027823592900045689845558554979655...
positive:  0.741456706769858920159460956349108949987...
		

Crossrefs

Cf. A198866.

Programs

  • Mathematica
    a = 3; b = 2; c = 3;
    f[x_] := a*x^2 + b*Sin[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, -1.29, -1.28}, WorkingPrecision -> 110]
    RealDigits[r]   (* A199156 *)
    r = x /. FindRoot[f[x] == g[x], {x, .74, .75}, WorkingPrecision -> 110]
    RealDigits[r]  (* A199157 *)

A199158 Decimal expansion of x<0 satisfying 3*x^2+3*sin(x)=1.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Nov 03 2011

Keywords

Comments

See A198866 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			negative: -1.1082694473937105467280082158614997423379...
positive:  0.2658016271983479815831296920342773310942...
		

Crossrefs

Cf. A198866.

Programs

  • Mathematica
    a = 3; b = 3; c = 1;
    f[x_] := a*x^2 + b*Sin[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /.
      FindRoot[f[x] == g[x], {x, -1.2, -1.1}, WorkingPrecision -> 110]
    RealDigits[r]   (* A199158 *)
    r = x /. FindRoot[f[x] == g[x], {x, .26, .27}, WorkingPrecision -> 110]
    RealDigits[r]   (* A199159 *)

A199159 Decimal expansion of x>0 satisfying 3*x^2+3*sin(x)=1.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Nov 03 2011

Keywords

Comments

See A198866 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			negative: -1.1082694473937105467280082158614997423379...
positive:  0.2658016271983479815831296920342773310942...
		

Crossrefs

Cf. A198866.

Programs

  • Mathematica
    a = 3; b = 3; c = 1;
    f[x_] := a*x^2 + b*Sin[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /.
      FindRoot[f[x] == g[x], {x, -1.2, -1.1}, WorkingPrecision -> 110]
    RealDigits[r]   (* A199158 *)
    r = x /. FindRoot[f[x] == g[x], {x, .26, .27}, WorkingPrecision -> 110]
    RealDigits[r]   (* A199159 *)

A199160 Decimal expansion of x<0 satisfying 3*x^2+3*sin(x)=2.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Nov 03 2011

Keywords

Comments

See A198866 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			negative: -1.27394191941158332703408474342055643506123...
positive:  0.466106421683196411148081035304500630437462...
		

Crossrefs

Cf. A198866.

Programs

  • Mathematica
    a = 3; b = 3; c = 2;
    f[x_] := a*x^2 + b*Sin[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, -1.3, -1.2}, WorkingPrecision -> 110]
    RealDigits[r]  (* A199160 *)
    r = x /. FindRoot[f[x] == g[x], {x, .46, .47}, WorkingPrecision -> 110]
    RealDigits[r]  (* A199161 *)

A199161 Decimal expansion of x>0 satisfying 3*x^2+3*sin(x)=2.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Nov 03 2011

Keywords

Comments

See A198866 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			negative: -1.27394191941158332703408474342055643506123...
positive:  0.466106421683196411148081035304500630437462...
		

Crossrefs

Cf. A198866.

Programs

  • Mathematica
    a = 3; b = 3; c = 2;
    f[x_] := a*x^2 + b*Sin[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, -1.3, -1.2}, WorkingPrecision -> 110]
    RealDigits[r]  (* A199160 *)
    r = x /. FindRoot[f[x] == g[x], {x, .46, .47}, WorkingPrecision -> 110]
    RealDigits[r]  (* A199161 *)

A198867 Decimal expansion of x > 0 satisfying x^2 + sin(x) = 1.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Nov 02 2011

Keywords

Comments

See A198866 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			negative: -1.40962400400259624923559397058949354...
positive:  0.63673265080528201088799090383828005...
		

Crossrefs

Cf. A198866.

Programs

  • Mathematica
    a = 1; b = 1; c = 1;
    f[x_] := a*x^2 + b*Sin[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, -1.41, -1.40}, WorkingPrecision -> 110]
    RealDigits[r] (* A198866 *)
    r = x /. FindRoot[f[x] == g[x], {x, .63, .64}, WorkingPrecision -> 110]
    RealDigits[r] (* A198867 *)
  • PARI
    a=1; b=1; c=1; solve(x=0, 1, a*x^2 + b*sin(x) - c) \\ G. C. Greubel, Feb 20 2019
    
  • Sage
    a=1; b=1; c=1; (a*x^2 + b*sin(x)==c).find_root(0,1,x) # G. C. Greubel, Feb 20 2019
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