Posted by **pakh** on Tuesday, February 3, 2009 at 4:53am.

u(x,y)=xln(x^2+y^2)-(2y times inverse of tan of y/x)

1)find derivative of u wrt to x and then wrt y

2)show that (x times derivative of u wrt x)+(y times derivative of u wrt y) = u +2x

## Answer this Question

## Related Questions

- College Math (Calculus) - Suppose the length of a rectangular box, with lengths ...
- Chemistry - When I invert the concentration of say this equation: 2HCr4- + 3HS03...
- Calculus - 1.) Find the derivative of tan (sec x). 2.) Find the derivative if 1/...
- Math: partial derivative - z=u(v+w)^(1/2) find ∂^3z/(∂u∂v&#...
- math - Integrate Sin(rootx) wrt x
- AP CHEM - For the reaction A + 2B + C ----> 2 D + E the following initial ...
- CHEMISTRY PLEASE HELP - For the reaction A + 2B + C ----> 2 D + E the ...
- Calculus - How would I go about finding the derivative of f(x)=ln(x)(7x-2)^3 ...
- Managerial Econ - given the demand function Q=9-.5P how can you figure out the ...
- Calculus Please check - Please check my answers and let me know if I did ...

More Related Questions