JEE Main 2018 — Definite Integration Question with Solution
From: JEE Main 2018 (Online) 15th April Evening Slot
Question
The value of integral is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Let
also let K =
Multiplying numerator and denominator by
(1 sin x) we get;
= x(1 sin x) sec2x
= x sec2x x sin x sec2x = x sec2x x tan x sec x
Now,
I =
-
I = -
I =
I = - +
I =
also let K =
Multiplying numerator and denominator by
(1 sin x) we get;
= x(1 sin x) sec2x
= x sec2x x sin x sec2x = x sec2x x tan x sec x
Now,
I =
-
I = -
I =
I = - +
I =
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