Question

Find dx/dt when x=1, y=0 and dy/dt=2 for the following equations

y= sqroot(x-1)
x = cos y

Answer 1

Find dx/dt when x=1, y=0 and dy/dt=2 for the following equations

y= sqroot(x-1)
x = cos y
======================
y = (x-1)^.5
dy/dx = .5 (x-1)^-.5
dy/dt = {.5 (x-1)^-.5 } dx/dt
so
dx/dt = 2 (x-1)^.5 dy/dt
Your turn.
This is very similar to an earlier question. Please go back over the chapter in your text.