TI-89 Titanium Help: Decimal Conversion & Tutorials

[i2c]

My guess is that the calculator doesn't like 8x, and that the expression on the right should be 8*x*cos(x).

8x*cos(x) graphs fine for me on my 89.

 

[awesome123333]

i am having trouble factoring :(
when i try to factor 4x^3+12x^2-8x i end up getting 4x(x-.561..)(x+3.561..)
i don't know if i have the settings wrong or something
PLEASE HELP

 

[ArcanaNoir]

i am having trouble factoring :(
when i try to factor 4x^3+12x^2-8x i end up getting 4x(x-.561..)(x+3.561..)
i don't know if i have the settings wrong or something
PLEASE HELP

get it off decimal mode. I don't have one, so I don't know exactly how, but that is what you need to do. My calculator (a casio classpad) refers to non-decimal mode as "standard" mode.

 

[swimgirl]

I need help with my Ti 89. When I factor or solve from the F1 algebra menu it gives me answers in matrix format. I have tried clearing memory and reformatting... Please help!

 

[manningb57]

I need help with my Ti 89. When I factor or solve from the F1 algebra menu it gives me answers in matrix format. I have tried clearing memory and reformatting... Please help!

What you need to do, is push the mode button, press f2 to go to the second page, scroll down to "Exact/Approx". You need to change this to Exact, or Auto. This should solve your problem.