- #1
krimsondane
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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.
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
There could be a few reasons for this. Firstly, check that you have entered the correct numbers and operations in the correct order. If you are using parentheses, make sure they are in the correct place. Also, make sure you are using the correct mode for your calculations, such as degrees or radians. Another possibility is that your calculator may need new batteries or is malfunctioning.
This will depend on the specific model of your calculator. Some models have a dedicated button for switching between degrees and radians, while others may require you to access a menu or use a key combination. Refer to your calculator's manual for specific instructions.
Yes, most scientific calculators have a complex number mode that allows you to perform calculations with real and imaginary numbers. You may need to access this mode through a menu or key combination. Again, refer to your calculator's manual for specific instructions.
Not all scientific calculators have graphing capabilities, so make sure yours has this feature before attempting to graph equations. If it does, you will need to enter the equation in the correct format and select the graphing function. Refer to your calculator's manual for specific instructions on how to do this.
First, make sure your calculator has fresh batteries or is properly charged. If it still does not turn on, there may be an issue with the battery connection or the calculator itself. Try cleaning the battery contacts and if that does not work, it may be time to replace your calculator.