How to reset a casio scientific calculator?

Casio fx 9750G plus calculator help?

• Hi, i need help with using the IRR function on this calculator. its the Casio fx 9750G plus (green and white one) but i'm sure there are many similar models out there as well. whenever i put in the values in the list then go to the cash flow function of TVM and press the IRR, i always get an error. .the NPV and NPF functions work just fine (i've checked by doing them manually) but the IRR as well as the PayBack functions don't work for some reason. I have the right list selected as well. i recall using these functions some time ago and they worked just fine but now, i'm not sure whats wrong. I've been borrowing this calculator for the last 4 months and i got a decent feel for it now. I don't have a manual tho because my friend didn't give me one. Does anyone know what i got to do to fix this?

• Answer:

  When you have cash flows where the signs change more than once, in such cases handheld financial calculators are not able to report the IRR results An example would be -1600 10000 -10000 Here the signs change twice once from minus to plus then from plus to minus, thus the IRR button will report an error You can try some of the online IRR calculators on web when you can't get an answer from a pocket calculators See this site for IRR, XIRR, Incremental IRR and Multiple IRR calculators IRR Calculator http://thinkanddone.com/finance/online-irr-calculator.html XIRR Calculator http://thinkanddone.com/finance/online-xirr-calculator.html Incremental IRR Calculator http://thinkanddone.com/finance/online-incremental-irr-calculator.html Multiple IRR Calculator http://thinkanddone.com/finance/online-multiple-irr-calculator.html