Thursday
October 30, 2014

Homework Help: calculus

Posted by Anonymous on Saturday, April 21, 2007 at 3:11pm.

a particle moves along the curve xy=10. if x=2 and dy/dt=3, what is the value of dx/dt.

i'm guessing this is something to do with parametric equations.

if x is 2, then y=5. but how do i get dx/dt.

you have to differentiate the equation with respect to t
so xy=10
x(dy/dt) + y(dx/dt) = 0

when x=2 y = 5 and dy/dt = 3

so 2(3) + 5(dx/dt) = 0
etc. solve for dx/dt

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

calculus - A point moves along the curve that has the parametric equations: x=9t...
Calculus - Find parametric equations for the tangent line to the curve with the ...
calculus - (a) Modifying the parametric equations of a unit circle, find ...
PHYSICS - When the force F acting on a particle depends only on the particle's ...
Calculus - A curve is defined by the parametric equations: x = t2 t and y = t3...
ap calculus - a particle moves along the x axis in such a way that its ...
Calculus 3 - If the curve of intersection of the parabolic cylinder y = x^2 and ...
Calc 3 - Find the parametric equations for the tangent line to the curve with ...
Calc 3 - Find the parametric equations for the tangent line to the curve with ...
Calculus - a particle starts at time t = 0 and moves along the x axis so that ...

Search
Members