Question

x=1/1-tsquare ,y=1+tsquare this question in limits and derivatives please solve this question fastly

Answer 1

dx/dt=(1-t^2+2t)/(1-t^2) - eq(1)
dy/dt=2t - eq(2)
eq(2)/eq(1)
dy/dx= (2t)(1-t^2)/(1-t^2+2t)