1.

int Cos^(-1)(2x^(2)-1)dx=

Answer»

`2(X SIN^(-1) x + SQRT(1 - x^(2))) + c `
`2 (x cos^(-1) x + sqrt(1 - x^(2))) + c `
`2 (x cos^(-1) x -sqrt(1 -x^(2)) )+ c`
`2 (x sin^(-1) x - sqrt(1 -x^(2)) )+ c `

Answer :C


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