Functions dialog

Select Construct tab > Curves panel > Other Methods > Functions to display the Functions dialog.

With functions, you create user-defined mathematical relationships to generate a graphical figure. Functions can be of several types:

y=F(x)

x=F(y)

r=F(a)

x=F(t), y=G(t)

r=F(a), Z=G(a)

x=F(t), y=G(t), z=H(t)

The variables a, r, t, x, and y are local to the functions dialog. Any previous values that you have set for these variables are ignored. However, you are free to use any other previously defined variables. In addition to variables, you may use any predefined functions or constants discussed under Equations.

Trigonometric functions are often used in constructing these functions. Be careful to use sind(), cosd(), and so on when using degrees and sin(), cos(), and so on when using radians.