Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Complete solution set of the equation |x 2 - 1 + cosx| = |x 2 − − 11 + |cosx| belonging to (-2 π π , π π ), is
A
B
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D
Text Solution
Verified by ExpertsThe correct answer is:
D
|x 2 - 1 + cosx| = |x 2 -1| + |cosx|. It implies that (x 2 -1). cos ≥ ≥ 0 because |x + y| = |x| + |y| if x y ≥ ≥ 0. Sign scheme of (x 2 - 1) cosx is
Thus solution is
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