1.

int (x tan^(-1)x)/(sqrt(1 + x^(2)))d x=

Answer»

`sqrt(1 +X^(2)) TAN^(-1) " x- LOG "(x + sqrt(1 + x^(2))) + C`
`sqrt(1 +x^(2)) tan^(-1) " x + log "(x + sqrt(1 + x^(2))) + c`
` (tan^(-1)x)/(sqrt(1 +x^(2))) "+ log "(x + sqrt(1 + x^(2))) + c`
` (tan^(-1)x)/(sqrt(1 +x^(2))) "- log "(x + sqrt(1 + x^(2))) + c`

ANSWER :A


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