Texas Instruments TI-89 사용자 설명서

Numeric Solver

 678

Selecting a New Initial Guess from the Graph

Selecting a New Initial Guess from the Graph

Selecting a New Initial Guess from the Graph

Selecting a New Initial Guess from the Graph

To use the graph cursor to select an initial guess:

1. Move the cursor (either free-moving or trace) to the point that you want to use as the 

new guess.

Returning to a Full Screen

Returning to a Full Screen

Returning to a Full Screen

Returning to a Full Screen

From the split screen:

•

To display the Numeric Solver full screen, use 

2 a to make the solver screen 

active, press 

…, and then select 

.

– or –

•

To display the Home screen, press 

2 K twice.

2. Use 

2 a to make the Numeric 

Solver screen active.

3. Make sure the cursor is on the 

unknown variable, and press 

†.

 Cursor coordinate xc is the 

unknown variable value, and yc is the 
leftNrt value.

4. Press 

„ to re-solve the equation.

†

 sets the graph 

cursor’s xc value as 
an initial guess and 
the yc value as left

N

rt. 

The graph’s xmin and 
xmax values are set 
as the bounds.