$\Theta \rho ϵ\eta \Pi \alpha \tau \pi$

Suppose that $f,F:ℝ\to ℝ$, and that $I\subseteq ℝ$, then we say that $F$ is an antiderivative of $f$ on an interval $I$ if $$F^{\prime }\left(x\right)=f\left(x\right)$$ for all $x\in I$