B b521 Jul 2010 10 0 Jul 22, 2010 #1 z² = x² + y² dx/dt = 2 dy/dt = 3 Find dz/dt when x = 5 and y = 12 I tried solving this problem but got very confused. Help would be much appreciated!
z² = x² + y² dx/dt = 2 dy/dt = 3 Find dz/dt when x = 5 and y = 12 I tried solving this problem but got very confused. Help would be much appreciated!
P pencil09 Nov 2009 63 14 Jul 22, 2010 #3 b521 said: z² = x² + y² dx/dt = 2 dy/dt = 3 Find dz/dt when x = 5 and y = 12 I tried solving this problem but got very confused. Help would be much appreciated! Click to expand... \(\displaystyle z^2=x^2+y^2\) \(\displaystyle \frac{d(z^2)}{dt}=\frac{d(x^2+y^2)}{dt}\) \(\displaystyle \frac{d(z^2)}{dt}=\frac{d(x^2)}{dt}+\frac{d(y^2)}{dt}\) can u continue from here....?? -- hope it'll help -- Reactions: HallsofIvy
b521 said: z² = x² + y² dx/dt = 2 dy/dt = 3 Find dz/dt when x = 5 and y = 12 I tried solving this problem but got very confused. Help would be much appreciated! Click to expand... \(\displaystyle z^2=x^2+y^2\) \(\displaystyle \frac{d(z^2)}{dt}=\frac{d(x^2+y^2)}{dt}\) \(\displaystyle \frac{d(z^2)}{dt}=\frac{d(x^2)}{dt}+\frac{d(y^2)}{dt}\) can u continue from here....?? -- hope it'll help --