Answer
Fill the blank with:
an antiderivative/integrand.
Work Step by Step
If $F(x)$ is an antiderivative of $f(x)$, that is $\quad F'(x)=f(x)$, then the indefinite integral of f is
$\displaystyle \int\underbrace{f(x)}_{integrand}\cdot\underbrace{dx}_{variable.of.int.}=F(x)+C.$
If the derivative of $\underbrace{Julius}_{F(x)}$ is $\underbrace{Augustus}_{f(x)}$, then Augustus is an antiderivative/integrand of Julius.
Fill the blank with:
an antiderivative/integrand.
