Question:
Mark $(\sqrt{ })$ against the correct answer in each of the following:
$\int \sec x(\sec x+\tan x) d x=?$
A. $\tan x-\sec x+C$
B. $-\tan x+\sec x+C$
C. $\tan x+\sec x+C$
D. $-\tan x-\sec x+C$
Solution:
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