Entering partial derivatives?

[Han]

One way is:

f(x,y):=x^2*y+x*y^2;
diff(f(x,y),x,y);

For higher order derivatives, you simply add more commas and variables. For the \( \frac{\partial}{\partial x^2} \) you can use the shortcut:

diff(f(x,y),x$2);

You can also mix and match the two, such as:

diff(f(x,y),y$2,x);