Recent content by niekehecv

Homework Statement given z=yf(x^2-y^2) show that the x(∂z/∂y)+y(∂z/∂x)=xz/y The Attempt at a Solution cut it short, my ∂z/∂y= f(x^2-y^2)-2(y^2)f(x^2-y^2) ∂z/∂x=2xyf(x^2-y^2) i was able to prove that x(∂z/∂y)+y(∂z/∂x)=xz/y But i need help with partial differentiations...

hey, i do not understand how you found out that <a,b,c> =(2/\sqrt{11})<3, -1, 1>. how can you elaborate more on this part?

hello there, the particle is traveling at a straight line. so it would be the former.

if there isn't enough information provided please inform me so i could inform the lecturer as soon as possible

Homework Statement a particle traveling in a straight line is located at the point (4, -2, 3) with the speed of 2 m/s at time t=0. the particle moves toward the point (6, 0, 9) with constant acceleration 3i-j+k. find its position vector r(t) at time t The Attempt at a Solution...