Find the first partial derivatives of f(x, y, z) = z arctan(y/x) at the point (4, 4, -2).

What is the shape of the height and weight distribution

Sketch one cycle if the cosine function y=2cos2theta

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?