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સાબિત કરો કે:tan^-1((sqrt(1+x^2)+sqrt(1-...

સાબિત કરો કે:`tan^-1((sqrt(1+x^2)+sqrt(1-x^2))/(sqrt(1+x^2)-sqrt(1-x^2)))=pi/4+1/2 cos^-1x^2`

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Verified by Experts

The correct Answer is:
`-(1)/(2)`
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