The number of all possible triplets ( a 1 , a 2 , a 3 ) such that a 1 + a 2 cos (2 x ) +…
Mathematics · JEE Advanced · NTA Exams — Trigonometry
The number of all possible triplets (a1, a2, a3) such that
a1 + a2 cos (2x) + a3 sin2 x = 0∀x is
a1 + a2 cos (2x) + a3 sin2 x = 0∀x is
- zero
- one
- three
- infinite
- none
Answer
(D) infinite
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