400
If f is a continuous function on an open interval for 'I' and 'a' any point in 'I', and F is defined by
x
F(x)=∫f(t)dt,
a
and F'(x)=f(x) at each point in 'I' where F'(x) is the derivative of F(x), then ___ is in effect.
What is the Second Fundamental Thereom of Calculus?