Recent content by PeterFer

oh wow thank you so much, I completely forgot about trig substitution. Thanks a lot I just got it

I think I understand where the sqrt(z2 + x2) in the denominator of the answer comes from, if you pretend z2 + x2 is one term and take its anti-derivative you get 1/sqrt(z2 + x2), but i don't know where the x in the numerator or the z2 in the denominator come from

yea I've been trying to think of it that way but everything i do doesn't end up working and I can't think of anything else to do

Homework Statement For one of my physics classes I need to integrate a function of two variables, but I haven't learned how to do it yet in my calculus classes. If anyone could explain to me how to do it, it would be much appreciated. It's probably pretty simple I just haven't learned it...

ah yea thank you, i ended up realizing that myself but thank you anyway

Homework Statement Two forces, vector F 1 = (3 i - 2 j) N and vector F 2 = (4 i - 7 j) N, act on a particle of mass 1.70 kg that is initially at rest at coordinates (-1.70 m, +4.25 m). i know that the components of the velocity at 9.4 seconds are (38.7i - 49.7647j)m/s i also know that...