Question about Texas Instruments TI-84 Plus Calculator

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How do I ente 8x - 1 over 10 on my TI 84 plus silve edition

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Hello,
I am not sure what the cross (x) means: is it a multiplication or the variable x, so I took a screen capture of both cases.

The top case is obtained as follows the asterisk is the multiplication sign to thr right of digit 9; the small minus is the change sign key the minus sign in parentheses under digit 3 and to the left of ENTER key.; the forward slash is the division sign, above the multiplication sign.
This small minus called change sign makes a positive number negative and a negative number positive, hence its name. If your expression starts with a negative sign that is the one to use. Use it also for negative exponents.

As you can see the result is -.8. Notice how the - before the dot is small with respect to the regular minus, as in the last expression.

For the last expression on the screen capture, there is nothing special, except that you have two ways to enter the variable X.

1. Press [ALPHA] [STO->]
2. Press the key [X,T, Theta, n] to the right of the green [ALPHA] key.

Hope it helps.

how do I ente 8x - 1 over 10 on my TI 84 plus - febc94d.jpg

If x is the multiplication sign
8[x] [(] (-)1

Posted on Oct 07, 2009

  • k24674 Oct 07, 2009

    Disregard the last two lines.

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