Solving Equations; Numeric Solver - Texas Instruments TI-84 Plus CE Getting Started

Solving Equations

Press » } to access C:Numeric Solver... .

Numeric Solver

1. Enter an equation as expression 1 = expression 2 ( E1 = E2 ).
You may enter more than one variable, but you will have to select one variable to
solve. The other variables used will take on the value stored in the calculator.
2. Press OK.
3. Place the cursor on the variable to solve. For this example, the variable is X.
The current value of X stored in the calculator is displayed (X=0).
You should enter a value close to your estimate of the solution. If needed, you can look
at the intersection of the graph of both sides of your equation or use the table of
values to know more about your problem. Here, X=0 is a reasonable starting point for
the calculator computation.
Bound – {-1E99, 1E99} represents the calculator version of the Real Number line:
- 99 99
{ 1x10 , 1x10 }. You can change this interval if you know about where the solution
lies given your study of a graph or table. For most textbook problems, you probably will
not have to change this line.
4. Press the [SOLVE] (s) shortcut key.
5. Check your solution. The calculator checks the solution it generated.
Interpreting the Numeric Solver Screen
Always read the context help line for tips.
The solution will be marked with a small
square.
(Advanced) Bounds gives the interval where the solution is found. Here, {-1E99, 1E99}
- 99 99
is { 1x10 , 1x10
large interval of numbers. You can adjust this interval if you do not get all the
solutions to your equation by limiting the values to a smaller interval. Here, there is
only one solution,
-
X= 2.
} which has the calculator looking for the solution within a very
Solving Equations 51