Chapter 5 - Section 5.3 - The Fundamental Theorem of Calculus - 5.3 Exercises - Page 400: 26

$\displaystyle\int\limits_{-5}^5edx=10e$

$\displaystyle\int\limits_{-5}^5edx$ $e$ is a constant, take it out of the integral: $e\displaystyle\int\limits_{-5}^5dx=...$ Evaluate the integral and apply the second part of the fundamental theorem of calculus: $...=ex\Big|_{-5}^{5}=e[5-(-5)]=10e$