1.

If y = cos^(-1)((a^(2)-x^(2))/(a^(2)+x^(2)))+sin^(-1)((2ax)/(a^(2)+x^(2))), then (dy)/(dx) to

Answer»

`a/(x^2+a^2)`
`(2A)/(x^2+a^2)`
`(4A)/(x^2+a^2) `
`a^2/(x^2+a^2)`

ANSWER :C


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