Mathematics

Mathematics

Problem

If the integral ∫5tan⁡xtan⁡x−2 dx=x+alog⁡∣sin⁡x−2cos⁡x∣+k\int \frac{5 \tan x}{\tan x - 2}\,dx = x + a \log|\sin x - 2 \cos x| + k, then aa is equal to a. -1 b. -2 c. 1 d. 2

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