Answer (1 of 3): If it's anything like the web page, you can just explicitly write the derivative, including what you're differentiating wrt., like this: d(y*x^2-xy)/dy - Wolfram|Alpha
Partial Derivative Calculator. f(x,y)=, with respect to. x, y. Submit. Computing... Get this widget. Build your own widget »Browse widget gallery »Learn ...
A Partial Derivative is a derivative where we hold some variables constant. For a function with multiple variables, we can find the derivative of one variable ...
More than just an online derivative solver. Wolfram|Alpha is a great calculator for first, second and third derivatives; derivatives at a point; and partial ...
Wolfram|Alpha is a great resource for determining the differentiability of a function, as well as calculating the derivatives of trigonometric, logarithmic, exponential, polynomial and many other types of mathematical expressions. Differentiation has many applications within physics, trigonometry, analysis, optimization and other fields. + Expand
partial differential equation - Wolfram|Alpha. Area of a circle? Easy as pi (e). Unlock Step-by-Step. Natural Language. Math Input. NEW Use textbook math notation to enter your math. Try it.
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But the formula to calculate the directional derivative using the gradient ... a second mistake: since the partial derivatives are not continuous at (0,0), ...
Wolfram|Alpha calls Wolfram Languages's D function, which uses a table of identities much larger than one would find in a standard calculus textbook. It uses well-known rules such as the linearity of the derivative, product rule, power rule, chain rule and so on.