# Thinkwell | Exercise_2.63.pdf - Thinkwell | Exercise back...

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10/27/19, 8 : 29 PM Thinkwell | Exercise Page 1 of 1 back 6 of 10 next Correct! You said A: ln | sec x | + C The correct answer is A: ln | sec x | + C Explanation: back answer key next Integrate. tan xdx tan x dx = dx u = cos x , du = - sin x dx , - du = sin x dx