1.

If x^(2)y-x^(3)(dy)/(dx)=y^(4)cosx then x^(3)y^(-3) is equal to

Answer»

`y^(3)(1+3 SIN X) = x^(3)`
`x^(3)(1+ sin x) = y^(3)`
`y^(3)(1- sin x) = x^(3)`
`x^(3)(1- sin x) = y^(3)`

ANSWER :A


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