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Evaluate :
Evaluate
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viii.
ix.
Ans. - cosec x + tan x + x – sec x + C
Ans. sec x – cosec x + C
Ans.
Ans. 4 tan x – 9 cos x – 25x + C
Ans. -log |cos x – sin x| + C
Ans. cos(a – b)log |sin (x + b)| -x sin(a –b) + C
Ans. x cos 2α - sin 2α . log |sin(x + α)| + C
Ans. tan x – x + C
Ans. 2 tan x – 3 sec x + C
Mark (√) against the correct answer in each of the following: