- #1
Jenkz
- 59
- 0
Homework Statement
If x(t) = cos2t ; y(t) = t - tant
Show that:
(dy/dx)^2 = 1- x / 4(1+x)^3
The Attempt at a Solution
dy/dx = dy/dt * dt/dx = (dy/dt) / (dx/dt)
dy/dt = 1- sect^2 ; dx/dt = -2sin2t
So (dy/dx)^2 = (1 - sect^2)^2 / (4 sin2t^2)
From here I'm not too sure on how to get to the answer.