Fix typo in expansion of sin and cos using exponentials

FourierFlows / FourierFlows.jl

Tools for building fast, hackable, pseudospectral partial differential equation solvers on periodic domains

https://bit.ly/FourierFlows

MIT License

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Closed navidcy closed 7 months ago

glwagner commented 7 months ago

Can you explain?

navidcy commented 7 months ago

Can you explain?

cosx = 1/2 [exp(ix) + exp(-ix)] sinx = 1/2i [exp(ix) - exp(-ix)]

The minus from second exponential was missing.