After working with the "split the middle term" scheme for factoring trinomials of the form
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Naturally, one could enter the program into a calculator. However, the file for the program in is available at trifact1.83p. Similar files are available for the trifact1 program on the TI-85 and for the trifact1 program on the TI-86. Depending upon your browser, you should be able to save the file to your disk and then transfer it via TI-Graphlink, assuming you have the program and the required cable.
We conclude this page with few sample runs of the program:
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We open the PRGM menu by pressing the ![]() ![]() |
![]() | All that has been accomplished is to paste the command
prgmTRIFACT1 onto the screen. We will have to press the
Having highlighted the TRIFACT1 program, we can press the
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![]() | In Figure 3 the program has started. It has cleared the display and
written the heading,
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![]() | Not only did we supply the value 1 for A,
Figure 4 shows that we have entered the value 11 for B and the value 24 for C.
These are the coefficients for
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![]() | Figure 5 shows the answer produced by the program. The
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![]() | The program was completed in Figure 5. To restart it, we press
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![]() | Figure 7 shows the result, after entering the value for C and pressing
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![]() | Figure 8 gives the data entry for the problem
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![]() | Figure 9 shows the result, after entering the value for C and pressing
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![]() | Figure 8 gives the data entry for the problem
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![]() | The program can not factor this trinomial using just integers. The message to that effect is displayed on the screen seen in Figure 11. |
![]() | Figure 12 gives the data entry for the problem
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![]() | Figure 13 shows the result, after entering the value for C and pressing
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![]() | Figure 14 gives the data entry for the problem
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![]() | Figure 15 shows the result, after entering the value for C and pressing
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![]() | Figure 16 gives the data entry for the problem
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![]() | Figure 17 shows the result, after entering the value for C and pressing
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The trifact1 program, given and illustrated above, produces output that asks the user to associate the numeric answers with the coefficients of a standard answer