Posted by Todd on Monday, April 23, 2012 at 1:13pm.
Just doing example questions to better understand. Find all first and second partial derivatives for the function
u= xy^2+x^2y

calculus  Damon, Monday, April 23, 2012 at 1:22pm
du/dx = y^2 + 2xy
d^2u/dx^2 = 2y
du/dy = 2xy + x^2
d^2u/dy^2 = 2x 
calculus  PS  Steve, Monday, April 23, 2012 at 3:19pm
Let's not forget
d^2u/dx/dy = d^2u/dydx = 2 
calculus  Drew, Monday, April 23, 2012 at 3:34pm
This is just for study for exam coming up and says it could be worth up to 12 marks. Not understanding vry well the two