Prove that sec x dx = In sec x+ tan x +C.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.5: The Binomial Theorem
Problem 47E
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*J sec x+ tan x
Prove that
sec x dx = In sec x+ tan x+ C. (Hint: Multiply the numerator and denominator
of the integrand by sec x+ tan x; then make a change of variables u = sec x+ tan x.)
Evaluate the left side. Multiply the numerator and denominator of the integrand by
sec x+ tan x and expand in the numerator.
( sec x( sec x + tan x)
dx
sec x dx =
sec x+ tan x
dx
sec x+ tan x
(Simplify your answer.)
증
Transcribed Image Text:*J sec x+ tan x Prove that sec x dx = In sec x+ tan x+ C. (Hint: Multiply the numerator and denominator of the integrand by sec x+ tan x; then make a change of variables u = sec x+ tan x.) Evaluate the left side. Multiply the numerator and denominator of the integrand by sec x+ tan x and expand in the numerator. ( sec x( sec x + tan x) dx sec x dx = sec x+ tan x dx sec x+ tan x (Simplify your answer.) 증
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