Draw the approximate shape of the surface of the binary function f(x, y)

APP description

This page draws the approximate shape surface of the binary function f(x, y). In the following input boxes,
enter the definition of the binary function f(x, y) with a high-level language-like expression, such as
\(x^2+y^2\) or \(xx+yy\), which is also supported. Some commonly used functions, specific expression input method see constant expression calculation page and the binary function value
calculation page, but the arguments can only be represented by the letters x and y. You must also
enter the image range of the surface, x1, x2 is the drawing range of the x-axis, x1 < x2, y1, y2 is the
drawing range of the y-axis, y1 < y2, these four numbers can be input with a constant expression, for
example , \((2*p)^\frac{1}{2}\) represents the square of the pi of 2 times, and so on. After entering each data and
clicking the "Start Drawing" button, the surface of the function will be displayed.

Usage example

f(x,y)=0

x1=0

x2=3

y1=0

y2=3

Click "start drawing" and output the result