Example: Solve 3x2e-x - 2x = 4
2. 0: Solver...
3. Scroll Up Using Arrow Key
4. CLEAR. Your calculator screen should display the following:
eqn: 0 =
Rewrite your equation so that everything is on one side of the equal sign; this is the so-called "zero equal" form. The "zero" side of the equation is waitin for you. You type in the right side of the equation.
5. eqn: 0 = 3x^2 e^(-x) - 2x - 4
7. X = (some number). The cursor will be flashing on this number, but the number is not your solution. The number displayed is whatever the solution was the last time the solver was used, or whatever was the last value of x stored in memory. Ignore this number. Also ignore the information displayed on the bound" line that is below the "X = " line.
8. With the flashing cursor stil on top of the current value of x, enter a "guess" value for the solution. The closer your guess is to the correct value of x, the shorter will be the wait time for the actual solution to appear, but this wait time is seldom more than five seconds, and is usually just one or two seconds, so little time should be spent trying to make a good guess, so just pick a number--any number, and enter it in place of whatever number is already displayed for x. I always pick the same number: 5.