Question

If x^2 + y^2 = 25 and dy/dt = 4, find dx/dt when y = 3

Answer 1

So @jsa are you having trouble differentiating w.r.t t?

Answer 2

yes :/ help?

Answer 3

\[\frac{d}{dt}x^2=2x \frac{dx}{dt} \text{ by chain rule } \]

Answer 4

you try differentiating y^2 w.r.t t

Answer 5

@jsa have you tried yet?

Answer 6

I'm really confused...

Answer 7

On chain rule?

Answer 8

do you have any problems with this:
\[\frac{d}{dx}x^2=2x ?\]