Step 1 :
\The fundamental theorem of calculus, part 1 :
\If f is continuous on
then the function g is defined by
is continuous on
and differentiable on
, and
Step 2 :
\The equation is 
Compare
with 
The function 
Thus, from the fundamental theorem of calculus, part 1 
The derivative of the function
.
The derivative of the function 
Solution :
\The derivative of the function 
\