## Thomas' Calculus 13th Edition

Published by Pearson

# Chapter 5: Integrals - Section 5.3 - The Definite Integral - Exercises 5.3 - Page 275: 7

#### Answer

--$\int^0_\frac{-\pi}{4}(sec x)dx$

#### Work Step by Step

Interpreting Limits of sums as Integrals -$\lim\limits_{||p|| \to 0}$ $\Sigma^n_{k=1} (sec c_k) Δx_k$ where P is a partition of $[\frac{-\pi}{4},0]$ as --$\int^0_\frac{-\pi}{4}(sec x)dx$

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