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If y = sin ^(2) alpha + cos ^(2) (alpha ...

If `y = sin ^(2) alpha + cos ^(2) (alpha + beta) + 2 sin alpha sin betacos(alpha+beta)`
then `(d^(3)y)/(dalpha^(3))=?`

A

`A gt 1`

B

`0 le A le 1`

C

`-1 le A lt 0`

D

`A lt -1`

Text Solution

Verified by Experts

The correct Answer is:
B
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