f(x)=(pi2)x=pi2x. The derivative of kx=ln(k)*kx, so f'(x)=2ln(pi)*pi2x (with chain rule).
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derivative of sec2(x)=2tan(x)sec2(x)
the derivative of 3x is 3 the derivative of x cubed is 3 times x squared
2xsin2x+2x2sinxcosx
f'(x)xy=yx(y-1) f'(x)2=2x1=2x
f(x) = 3x2 + 5x + 2fprime(x) = 6x + 5