1.

Integrate the following functions w.r.to ‘x’.(i) sec2 x/5 (ii) cosec (5x + 3) cot (5x + 3) (iii) sec (2 – 15x) tan (2 – 15x)

Answer»

(i) ∫sec2 x/5 dx = 5 tan x/5 + c

(ii) ∫cosec (5x + 3) cot (5x + 3) dx = -1/5 cosec(5x + 3) + c

(iii) ∫sec (2 – 15x) tan (2 – 15x) dx = sec(2 - 15x)/-15 + c = (-1/15)sec(2 - 15x) + c



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