a) Where is the function

$\displaystyle f(z)=e^{{x^2} - {y^2}}[\cos(2xy) + i \sin(2xy)]$ analytic?

b) Find $\displaystyle f'(z)$ http://www.mathhelpforum.com/math-he...AAAElFTkSuQmCC and its derivative

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- Dec 24th 2011, 08:38 AMflamingComplex Variables - Analytic Function help needed
a) Where is the function

$\displaystyle f(z)=e^{{x^2} - {y^2}}[\cos(2xy) + i \sin(2xy)]$ analytic?

b) Find $\displaystyle f'(z)$ http://www.mathhelpforum.com/math-he...AAAElFTkSuQmCC and its derivative - Dec 24th 2011, 08:44 AMgirdavRe: Complex Variables - Analytic Function help needed
Did you look at Cauchy-Riemann equations?