If `y = ( 1 + 1/x^2 )/ ( 1 - 1/x^2 )` , then `dy/dx`

If y = tan ^(-1) ((2x)/(1-x^(2))) , " then " (dy)/(dx) =____________

If y = sec^(-1) ((1)/(2x^(2) -1)) " then " (dy)/(dx) = ?

If y=(1)/(1+x+x^(2)) , then (dy)/(dx)=

y=(1+x^2)/(1-x^2) , find dy/dx

1.If y =1+x+ x^(2) then (dy)/(dx)

If y=tan ^(-1) (sqrt( 1+x^(2)) +x ),then (dy)/(dx) =

If y=log((1-x^(2))/(1+x^(2)))," then "(dy)/(dx)=

If y=(1+(1)/(x^(2)))/(1-(1)/(x^(2)))backslash then (dy)/(dx)=-(4x)/((x^(2)-1)^(2))b-(4x)/(x^(2)-1) c.(1-x^(2))/(4x)d*(4x)/(x^(2)-1)

If y=((1-x)/(x))^(2)," then: "(dy)/(dx)=