Texas Instruments TITANIUM TI-89 - Manual (Page 487)

Additional Graphing Topics 487
To switch the active sides, press 2 a or use the
switch function, switch(1) or
switch(2) .
Drawing a Function or Inverse on a Graph Drawing a Function or Inverse on a Graph Drawing a Function or Inverse on a Graph Drawing a Function or Inverse on a Graph
For comparison purposes, you may want to draw a function over your current graph.
Typically, the drawn function is some variation of the graph. You can also draw the
inverse of a function. (These operations are not available for 3D graphs.)
Drawing a Function, Parametric, or Polar Equation Drawing a Function, Parametric, or Polar Equation Drawing a Function, Parametric, or Polar Equation Drawing a Function, Parametric, or Polar Equation
Execute DrawFunc , DrawParm , or DrawPol from the Home screen or a program. You
cannot draw a function or equation interactively from the Graph screen.
DrawFunc expression
DrawParm expression1 , expression2 [, tmin ] [, tmax ] [, tstep ]
DrawPol expression [,q min ] [,q max ] [,q step ]
For example:
1. Define y1(x)=.1x
3
–2x+6 on the Y= Editor,
and graph the function.