List questions from approximation

Published on 25 Mar 2026 - 12:13

87

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How to prove there is not a polynomial $P(x)$ that is a good approximation to $\cos(x)$ for all $x$?

Published on 05 Jul 2023 - 16:56

25

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Certifying point is within region of convergence

Published on 06 Jul 2023 - 0:36

50

Views

Orthogonal matrix times low-rank-approximation proof

Published on 28 Mar 2026 - 13:59

48

Views

Approximating series with a convergent series

Published on 07 Jul 2023 - 6:56

56

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Composition of little-oh notation

Published on 10 Jul 2023 - 2:55

31

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Robust polynomial interpolation with 1/x distribution?

Published on 27 Mar 2026 - 15:05

28

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Polynomial interpolation and least squares method for approximating the value of a function

Published on 12 Jul 2023 - 17:10

29

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Fast Graph Search Algorithms For When the Graph is Dense

Published on 12 Jul 2023 - 17:47

49

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Approximating Pi with fractional log base. Coincidence?

Published on 29 Mar 2026 - 2:34

1.6k

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Approximating cube roots to high precision.

Published on 17 Jul 2023 - 21:45

25

Views

Dropping a term in a partial differential equation

Published on 17 Jul 2023 - 23:22

92

Views

Approximations for $n$th roots

Published on 28 Mar 2026 - 2:09

132

Views

It is possible to find a power series approximation to the following smooth function $h(x)$?

Published on 28 Mar 2026 - 5:22

91

Views

Why is $\frac{x}{\sqrt{1+\frac12x^2}}$ a good approximation for arctan?

Published on 21 Jul 2023 - 12:07

List Question

How to get exact value from multiple approximate values

How to prove there is not a polynomial $P(x)$ that is a good approximation to $\cos(x)$ for all $x$?

Certifying point is within region of convergence

Orthogonal matrix times low-rank-approximation proof

Approximating series with a convergent series

Composition of little-oh notation

Robust polynomial interpolation with 1/x distribution?

Polynomial interpolation and least squares method for approximating the value of a function

Fast Graph Search Algorithms For When the Graph is Dense

Approximating Pi with fractional log base. Coincidence?

Approximating cube roots to high precision.

Dropping a term in a partial differential equation

Approximations for $n$th roots

It is possible to find a power series approximation to the following smooth function $h(x)$?

Why is $\frac{x}{\sqrt{1+\frac12x^2}}$ a good approximation for arctan?

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