Quadratic polynomials
- Define the function f(x) = a x^2 + b x + c (users of TouchPlotLite will define h(x) instead)
Note that the parameters a,b,c are obtained by pressing the Vars key.
Note also that for such an expression, one can type simply in this order Vars, a, x, ^, 2nd, 2, +, Vars, b, x, +, Vars, c.
Validate the formula with OK
If you own TouchPlot, you can go to f' menu and activate its drawing.
Go back to Main menu
Go to Constants menu, and activate sliders for the parameters a,b,c
Go back to Main menu, and Graph it !