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January 26, 2015

January 26, 2015

Posted by **x^y key** on Saturday, November 5, 2011 at 8:14pm.

Store 3 in P.

Now compute f(7)= Pa^7 by typing:

P x A x^y 7

***My problem is that I don't know WHERE the x^y key is on a TI -83 Plus.

Please help.

Then I have to subtract this answer from the answer using a rounded value of a (which I found to be 1831.)The difference will show the error used by rounding a and will not be zero.

- math - functions -
**MathMate**, Saturday, November 5, 2011 at 8:47pm - math - functions -
**check please**, Saturday, November 5, 2011 at 9:15pmSo I punched it in and the calculator reads:

P * A ^ 7

1613.078231

Did I do it correctly?

- math - functions -
**MathMate**, Saturday, November 5, 2011 at 9:38pmYes, I got the same answer.

The best way to check is to use numbers that you know, such as:

2^6=64,

2^20=1048576

3^4=81,

etc.

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