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Function: require_once
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Function: require_once
Find the derivative using the Fundamental Theorem of Calculus, part 1 , which states that if
f(x)is continuous over an interval
a,b, and the function
F(x)is defined by
F(x)=\int_a^x f(t)dt, then
F^(')(x)=f(x)over
a,b.
(d)/(dx)\int_(-9)^x \sqrt(81-y^(2))dy