Formula:KLS:01.04:13

<< Formula:KLS:01.04:12

formula in Hypergeometric functions

Formula:KLS:01.04:14 >>

${\displaystyle{\displaystyle{\displaystyle\cos z=\HyperpFq{0}{1}@@{-}{\frac{1}{2}}{-\frac{z^{2}}{4}}}}}$

Proof

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Symbols List

${\displaystyle{\displaystyle{\displaystyle\mathrm{cos}}}}$ : cosine function : http://dlmf.nist.gov/4.14#E2
${\displaystyle{\displaystyle{\displaystyle{{}_{p}F_{q}}}}}$ : generalized hypergeometric function : http://dlmf.nist.gov/16.2#E1

Bibliography

Equation in Section 1.4 of KLS.

URL links

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<< Formula:KLS:01.04:12

formula in Hypergeometric functions

Formula:KLS:01.04:14 >>