integration of x multiply underroot 1 (x*x)/1+(x*x)

integration of x multiply underroot 1 (x*x)/1+(x*x)
Integration of x multiply underroot 1-x-x-1-x-x

I imagine that 1-x^2 is u and nevermind how can i save it in arcsin : r/calculus

integrate sqrt((1+x)/(1-x)) dx

Integral Calculator • With Steps!

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Integrate the Functions (Sqrt(X^2 +1) [Log(X^2 + 1) - 2log X])/X^4 - Mathematics

integration of under root x dx from 1 to 4