Answer to Question #76676 in Calculus for vyea

Question #76676

1. By using the formula, f^' (x)= lim┬(z→x)⁡〖(f(z)-f(x))/(z-x)〗, find the derivatives of the following functions.

a) f(x)= 1/(x+2)
b) f(x)= 1/((x+2)²)
c) g(x)= x/(x-1)
d) g(x)=1+√x

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