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A)  If f (x)= e^cosx find f'(π /2) B) find f'(x) if f(x) =2e^x c) if f(x)=1/e^x...

A)  If f (x)= e^cosx find f'(π /2)

B) find f'(x) if f(x) =2e^x

c) if f(x)=1/e^x find f''(-1)

d)Find  if f(x) =90 (2^x/3) find f'(3)

No need to show any work, I just need the answer to each question to check my work. Thanks

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