Manipulate Matrix Output (TI84+)

[whatlifeforme]

When I manipulate two matrices by taking one and multiplying by the inverse of the other to solve a system of linear equations, how do I save the values of the output?

for example, the output i got for each variable was in decimal form, and i wanted to change each into fraction form.

 

[cbasst]

If you want to change the output into a fraction, I believe there is a function which can be found in the Math menu (I think it is the first option) which looks something like ->Frac. This function obviously won't work for irrational numbers, and it's possible that it doesn't always work for rational numbers. I haven't used it in a while since I got my TI 89Ti.

If you want to save the values, you could probably try storing them in another matrix variable, but I can't really test this out on a calculator right now since I don't have an 84+ anymore.

 

[whatlifeforme]

i know how to use the ->frac function. i just don't know how to save the output to run the function on each value.