Question

A particle is moving along the curve y=x√. As the particle passes through the point (4,2), its x-coordinate increases at a rate of 3cm/s. How fast is the distance from the particle to the origin changing at this instant?

Answer 1

i though that the answer was 3/4 what did i do wrong?

Answer 2

A prticle is moving along the curve y=sqrt(x)

Answer 3

please help