HP 0012C-90001 User Manual page 180

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180 Appendix B: 180 Appendix B: More About
180 180 Appendix B: Appendix B: More About More About
Your guess will aid the calculator in its search, and if it finds an
your guess, that answer will be displayed. Since the calculator cannot tell you the
number of solutions that exist when there is more than one mathematically correct
answer, you can continue to make guesses, pressing :gt after each one,
IRR
to search for solutions.
You can hasten this process by using the l function to help you make a good
guess. Remember that a correct
small. So continue to guess interest rates and solve for
obtain is reasonably close to zero. Then press :gt to calculate the
answer near your guess.
How would this work in case 2 above ? The calculator displays a negative answer
and you wish to check for a unique positive
i
for (starting from 0) and solve for
outcomes. Then press :gt to find an
obtained using the l key.
IRR iterative process, you can test the interest obtained using l,
If you stop the
and then restart the process by pressing :gt.
IRR solution will make the calculated
IRR
. Key in successively larger guesses
NPV
until you reach a sign change in your
IRR
solution near the last interest rate
IRR
answer near
NPV
NPV
until the answer you
very
IRR
NPV