1.

If y= a sin x + b cos x then, y^(2) + (y_(1))^(2)= ……. (a^(2) + b^(2) ne 0)

Answer»

`a COS X - B sin x`
`(a sin x- b cos x)^(2)`
`a^(2) + b^(2)`
0

Answer :C


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