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Prove that tan^(-1)x+tan^(-1)""(2x)/(1-x...

Prove that `tan^(-1)x+tan^(-1)""(2x)/(1-x^(2))=tan^(-1)((3x-x^(3))/(1-3x^(2)))absxlt(1)/(sqrt(3)).`

Text Solution

Verified by Experts

The correct Answer is:
`= x=13`
`=> x = ( a-b) /( a+ab)`
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