Find f′(x)f'(x)f′(x) for f(x)=2xf(x) = 2^xf(x)=2x.
2x2^x2x
2xln(2)2^x \ln(2)2xln(2)
x2x−1x 2^{x-1}x2x−1
1/x1/x1/x