The discussion revolves around the use of negative exponents in a formula related to present value calculations in finance. Participants are trying to understand how to input negative exponents using a scientific calculator, specifically the Texas Instruments TI-30x IIS model.
The discussion is ongoing, with participants providing suggestions regarding the calculator's functionality. Some have pointed out specific buttons that may assist in entering negative exponents, while others are still seeking clarity on the overall process.
One participant has indicated that they are unfamiliar with the calculator's operation, which may affect their ability to engage with the problem effectively. There is also a repeated emphasis on the formula without a clear resolution on how to input the negative exponent.
Mark44 said:Does your calculator have a Change Sign button? They are sometimes marked +/-.
krimsondane said:Homework Statement
PV = PMT *1-(1+i)^-n / i
PV = 225 * 1- (1+.0055)^-42 / .005
PV = 8417.37
How did they get this. how do you use a negative exponent on a scientific calculator. I have a calculator, just don't know how to use it correctly.
Homework Equations
The Attempt at a Solution