Tìm I= $\int (x-2\sin x)\frac{dx}{\cos^{2} x}$

Question

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4 câu trả lời

Answer 1

I= $x\tan x- \frac{1}{\cos^{2} x}- \frac{2}{\cos x}+ C$

Answer 2

I= $x\tan x+ ln|\cos x|- \frac{2}{\cos x}+ C$

Answer 3

I= $x\tan x+ ln|\cos x|+ \frac{2}{\cos x}+ C$

Answer 4

I= $x\tan x+ \frac{1}{\cos^{2} x}+ \frac{2}{\cos x}+ C$