- #26

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- Calculators
- Thread starter triden
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- #26

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- #27

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Hi, when try factor(2x^2+17xy+y^2) the result is the same equation, the same result with quadratic polynomials doesn't give a facotr answer. Thanks

try this

factor(2x^2+17*x*y+y^2)

xy doesn't mean x*y (it does to you and me but not to the 89)

- #28

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Change your mode to Float 12When I do a compounding interest problem on my TI-89 Titanium, it returns the answer as a whole number with no decimals. I have tried changing "Exact/Approximate" in the Mode menu, "diamond"-enter, but it always rounds the answer to the next whole number. Any help with this? Thanks.

- #29

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1. Make sure you're in Function mode, (i.e. not Polar or Sequence, etc)

2. If that doesn't work, make sure everything you want to keep (like programs/functions, etc) are archived, and press 2nd+On+Left+Right at the same time, it will reset your calculator back to stock, then it should work!

- #30

Mark44

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My guess is that the calculator doesn't like 8x, and that the expression on the right should be 8*x*cos(x).1. Make sure you're in Function mode, (i.e. not Polar or Sequence, etc)

2. If that doesn't work, make sure everything you want to keep (like programs/functions, etc) are archived, and press 2nd+On+Left+Right at the same time, it will reset your calculator back to stock, then it should work!

- #31

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8x*cos(x) graphs fine for me on my 89.My guess is that the calculator doesn't like 8x, and that the expression on the right should be 8*x*cos(x).

- #32

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when i try to factor 4x^3+12x^2-8x i end up getting 4x(x-.561..)(x+3.561..)

i dont know if i have the settings wrong or something

PLEASE HELP

- #33

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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.

when i try to factor 4x^3+12x^2-8x i end up getting 4x(x-.561..)(x+3.561..)

i dont know if i have the settings wrong or something

PLEASE HELP

- #34

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- #35

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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.

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