Index
Level Lines and Graphs of Functions, Specified Implicitly.
To plot a series of level lines of a function of two variables in Cartesian coordinates
F(x,y) = C1, C2...
select Level Line in the Choose Curve Type window, press OK and enter curve definition
in the following format:
F(x,y)=C1, C2,...
where F(x,y) is an expression, depending on variables x and y.
C1, C2, - numbers. You may specify as many constants, as you want. For each constant
a separate level line will be plotted.
Example:
x^2+y^2=1,2,10
defines 3 level lines (circles in this case) with equations x2+y2=1, x2+y2=2 and
x2+y2=10 respectively.
Tip. To plot graph of a function, specified implicitely in the form F(x,y)=0, you may
construct a single level line, defined with the given equation.