putting in y values in Ti-89

Hamster
Wed, 09 Nov 2005 21:44:59 +0000

You could graph a line Y=constant and ask the calculator to find the interesection point. Or you could just type the equation into the solve() function on the home screen.

Example: If your equation is Y1=3x^2+2x+5 and you want to know x when y is 3, you could make Y2=3 and find the intersection. Alternatively, you could type solve(3x^2+2x+5=3,x) on the home screen. Or, if you have it already typed into Y1, you can say solve(Y1(x)=3,x)