The number of all possible triplets (a1, a2, a3) such that a1 + a2 cos(2x) + a3 sin^2(x) = 0 for all x is - a.Zero b.One c.Three d.Infinite.

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Math
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redfiwf
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1 year ago

Answers 1

Answer:

Correct option is D)

we can write sin2x=2(1−cos2x)

a1+2a3=0

a2−2a3=0

These two equations can have infinite roots.

Option D

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The number of all possible triplets (a1, a2, a3) such that a1 + a2 cos(2x) + a3 sin^2(x) = 0 for all x is - a.Zero b.One c.Three d.Infinite.

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