1.

If x ∈ ( -∞, -1 ) then find the value of sin^-1[2x/(1+x^2)] + cos^-1[(1-x^2)/(1+x^2)]

Answer» If x ∈ ( -∞, -1 ) then find the value of sin^-1[2x/(1+x^2)] + cos^-1[(1-x^2)/(1+x^2)]


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