f(x) = x.e^(-pi.x^2)(adsbygoogle = window.adsbygoogle || []).push({});

this is how I tried to do it...

f'(x) = x.(-pi.2.x.e^(-pi.x^2)) + 1.e^(-pi.x^2)

f'(x) = (1 - 2.pi.x^2).e^(-pi.x^2)

can anyone see anything wrong with this?

Cheers

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