Primitive of Exponential Function/Examples/1 - x

Example of Use of Primitive of Exponential Function

 * $\ds \int e^{1 - x} \rd x = -e^{1 - x} + C$

Proof
From Primitive of Function of $a x + b$:

Hence:

Proof

 * : $\text {II}$. Calculus: Exercises $\text {XIV}$: $4$.