I'm using a Ti-84 plus and when I try simple division it gives incorrect answers. For example, when I enter 5/2 it answers 3. When I entered 50/100 it answers 1.

SOURCE: Linreg

enter your data into L1 as x-coordinates and L2 as y-coordinates at (STAT) + (EDIT) and then turn on your StatPlot. Finally, press (STAT) ->(CALC) -> (4)LinReg(ax+b) and (L1) (,) (L2) (Y1)
nb: Y1 could be find from (VARS) -> (Y-VARS)->(1:Function...)

SOURCE: equations

dear,

is there any INVALID DIM msg or not..

regards,

SOURCE: TI-83 Plus No Longer Squares Correctly

when you type -2 imagine your calculator doing the equation: -1 x 2. The - sign actually stands for a -1 so when you do -2 squared your calculator is simply following order of operations. It first squares the 2 making it 4, then it multiplies the negative making it -4. In order to get around this you must use parenthese. (-2)^2.

Hope this helped

SOURCE: Tan Cos and Sin errors

go to:


mode
select DEGREE rather than RADIAN three lines down.

SOURCE: My TI-84 Plus gives answer as 2.145274703E14, what Is E?

E is the calculators form of scientific notation. so 2.145274703E14
is really 2.145274703 x 10^14 or 214527470300000