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346 Functions and commands
Plot
Function Used to define a function graph in the Symbolic view of the
Geometry app. Plots the graph of an expression written in
terms of the independent variable x. Note that the variable is
lowercase.
plotfunc(Expr)
Example:
plotfunc(3*sin(x)) draws the graph of y=3*sin(x)
Implicit Used to define an implicit graph in the Symbolic view of the
Geometry app. Plots the graph of an equation written in terms
of the independent variable x and the dependent variable y.
Note that the variables are lowercase.
plotimplicit(Expr)
Example:
plotimplicit(x^2-2*y^2+3*x*y)
plots a rotated
hyperbola
Slopefield Used to define a slopefield graph in the Symbolic view of the
Geometry app. Plots the graph of the slopefield for the
differential equation y’=f(x,y) over the given x-range and y-
range.
plotfield(Expr, x=X1..X2, y=Y1..Y2)
Example:
plotfield(x*sin(y), x=-6..6, y=-6..6)
draws the slopefield for y’=x*sin(y) in the square region defined
by the x-interval [–6, 6] and the y-interval [–6, 6].
Contour Used to define a contour graph in the Symbolic view of the
Geometry app. Given an expression in x and y, as well as a
list of variables and a list of values, plots the contour graph of
the surface z=f(x,y). Specifically, plots the contour lines z1,
z2, etc. defined by the list of values.
Example:
plotcontour(x^2+2*y^2-2, {x, y}, {2, 4,
6})
draws the three contour lines of z=x^2+2*y^2–2 for z=2,
z=4, and z=6.