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Let e^(y) = ((sqrt(1+alpha)-sqrt(1-alpha...

Let `e^(y) = ((sqrt(1+alpha)-sqrt(1-alpha))/(sqrt(1+alpha)-sqrt(1-alpha)))` and `tan (x/2) = sqrt((1-alpha)/(1+alpha)), alpha in [-1,0) cup (0,1]` then find `dy/dx]_(x = pi/3)`

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if tan^(-1){(sqrt(1+x^(2))-sqrt(1-x^(2)))/(sqrt(1+x^(2))+sqrt(1-x^(2)))}=alpha then

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