CPM Homework Help : APCALC Problem 10-147

For the parametric equations $x(t) = 4t^2 - 4t$ and $y(t) = 1 - 4t^2$ , write the equations of each horizontal tangent line to the curve and the corresponding $t$ ‑value. Homework Help ✎

Hint:

$\frac{dy/dt}{dx/dt}=0$

Step:

$\frac{dy}{dt}=-8t=0$