Texas Instruments TI-89 Manuale Utente

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This example is a demonstration of symbolic manipulation. A one-step function is 
available for solving systems of equations.

Constants and Measurement Units

Constants and Measurement Units

Constants and Measurement Units

Constants and Measurement Units

Using the equation f = m…a, calculate the force when m = 5 kilograms and a = 20 
meters/second

2

. What is the force when a = 9.8 meters/second

2

. (This is the 

4. Highlight the equation for x in the history 

area.

Press 

C C C

5. Auto-paste the highlighted expression to 

the entry line. Then substitute the value of 
y that was calculated from the second 
equation.

Press 

¸ Í C ¸ ¸

The solution is: 
x = L8/11 and y = L20/11