Integrate e^x (tan x + sec^2 x).
Ae^x (tan x - 1)
Be^x tan x
Ce^x sec x
De^x sec^2 x
Answer & Solution
Correct answer: B. e^x tan x
Here f = tan x and f' = sec^2 x, so the form e^x [f + f'] integrates to e^x tan x.
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