graph y= 2x^2 ti-89? how do i do it. because when i try it says undefined variable?

Question

when i try to graph it, it says undefined variable or something like that and how would i also do functions in here. like f(x) = x^2 + 2x + 1, f(x-1)? im trying to learn how to use this calculator

Answer 1

ok well for your undefined varriable problem it looks like you messed up a setting, just reset your memory, and as for the f(x) problems your calculaor cant actually do that for you, you have to do it by hand, dont depend on your calculator so much it will turn on you in the future

Answer 2

Ti 89 Undefined Variable

Answer 3

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Define the variable