1.

if x€(-infinity ,-1)then find the value of 4 tan^-1x+sin^-1(2x/1+x^2)+cos^-1(1-x^2/1+x^2)

Answer» if x€(-infinity ,-1)then find the value of 4 tan^-1x+sin^-1(2x/1+x^2)+cos^-1(1-x^2/1+x^2)


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