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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A198869 Decimal expansion of x>0 satisfying 2*x^2+2*cos(x)=3.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Oct 31 2011

Keywords

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			0.96442044685110339926035690912472720651433...
		

Crossrefs

Cf. A198755.

Programs

  • Mathematica
    a = 2; b = 2; c = 3;
    f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, .94, .95}, WorkingPrecision -> 110]
    RealDigits[r] (* A198869 *)

A198870 Decimal expansion of x>0 satisfying 2*x^2+3*cos(x)=4.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Oct 31 2011

Keywords

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			1.216238809466393290599625767029343291154470...
		

Crossrefs

Cf. A198755.

Programs

  • Mathematica
    a = 2; b = 3; c = 4;
    f[x_] := a*x^2 + b*Cos[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, 1.3}, WorkingPrecision -> 110]
    RealDigits[r] (* A198870 *)

A198871 Decimal expansion of x>0 satisfying 2*x^2-cos(x)=1.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Oct 31 2011

Keywords

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			0.90036722258974714607307739352536365464027300...
		

Crossrefs

Cf. A198755.

Programs

  • Mathematica
    a = 2; b = -1; c = 1;
    f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, .9, .91}, WorkingPrecision -> 110]
    RealDigits[r] (* A198871 *)

A198872 Decimal expansion of x>0 satisfying 2*x^2-cos(x)=2.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Oct 31 2011

Keywords

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			x=1.1063325550299359152547560957295167526352...
		

Crossrefs

Cf. A198755.

Programs

  • Mathematica
    a = 2; b = -1; c = 2;
    f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, 1, 1.1}, WorkingPrecision -> 110]
    RealDigits[r] (* A198872 *)

A198873 Decimal expansion of x>0 satisfying 2*x^2-cos(x)=3.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Oct 31 2011

Keywords

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			1.28163038615996211042990667962001943164972109...
		

Crossrefs

Cf. A198755.

Programs

  • Mathematica
    a = 2; b = -1; c = 3;
    f[x_] := a*x^2 + b*Cos[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, 1.3}, WorkingPrecision -> 110]
    RealDigits[r]  (* A198873 *)

A198874 Decimal expansion of x>0 satisfying 2*x^2-cos(x)=4.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Oct 31 2011

Keywords

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			1.437513268413420304257234147095927537423880...
		

Crossrefs

Cf. A198755.

Programs

  • Mathematica
    a = 2; b = -1; c = 4;
    f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, 1.4, 1.5}, WorkingPrecision -> 110]
    RealDigits[r] (* A198874 *)

A198875 Decimal expansion of x>0 satisfying 2*x^2-2*cos(x)=-1.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Oct 31 2011

Keywords

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			0.580036678647097694548367916190637248242237...
		

Crossrefs

Cf. A198755.

Programs

  • Mathematica
    a = 2; b = -2; c = -1;
    f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, .58, .59}, WorkingPrecision -> 110]
    RealDigits[r] (* A198875 *)

A198876 Decimal expansion of x>0 satisfying 2*x^2-2*cos(x)=3.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Oct 31 2011

Keywords

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			1.321599620876718222137733492817504244992561534...
		

Crossrefs

Cf. A198755.

Programs

  • Mathematica
    a = 2; b = -2; c = 3;
    f[x_] := a*x^2 + b*Cos[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, 1.4}, WorkingPrecision -> 110]
    RealDigits[r] (* A198876 *)

A198877 Decimal expansion of x>0 satisfying 2*x^2-3*cos(x)=-2.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Oct 31 2011

Keywords

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			0.537272474772124645372051508512530242286...
		

Crossrefs

Cf. A198755.

Programs

  • Mathematica
    a = 2; b = -3; c = -2;
    f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, .53, .54}, WorkingPrecision -> 110]
    RealDigits[r] (* A198877 *)

A198878 Decimal expansion of x>0 satisfying 2*x^2-3*cos(x)=-1.

Original entry on oeis.org

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

Views

Author

Clark Kimberling, Oct 31 2011

Keywords

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Examples

			0.76377227490111905011055988592828314549736...
		

Crossrefs

Cf. A198755.

Programs

  • Mathematica
    a = 2; b = -3; c = -1;
    f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
    Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
    r = x /. FindRoot[f[x] == g[x], {x, .76, .77}, WorkingPrecision -> 110]
    RealDigits[r] (* A198878 *)
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