This page draws the shape and surface of the binary function f(a,b) expressed in spherical coordinates, where a is the angle of the xy plane, b is the angle of the vector and the z-axis, and the function value is the modulus from the origin. In the following input boxes, the definition of the binary function f(a, b) is input with a high-level language-like expression. For example, the constant 1 is the unit sphere, and some commonly used functions are also supported. For the specific expression input method, see constant expression calculation page and binary function value calculation page, but the arguments can only be represented by the letters a and b, never Can be represented by x, y. You must also enter the image range of the surface, a1, a2 is the drawing range of the angle a, a1 < a2, b1, b2 is the drawing range of the angle b, these four numbers can be input with a constant expression, for example, (2* p) (1/2) represents the square of the pi of 2 times, and so on. See the "Constant Expressions" page for the input syntax for constant expressions.
Input data:f(a,b)=5；a1=0；a2=16；b1=0；b2=1
The surface of the "Start Drawing" function will be displayed.
When entering the value, note that the lower limit is smaller than the upper limit.
After entering each data and clicking the "Start Drawing" button, the surface of the function will be displayed.
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