Re: 15c calculator Message #8 Posted by bill platt on 15 Nov 2010, 9:53 a.m., in response to message #1 by jim mac
Jim,
The 15c has additional tests compared to the 11c. Unlike the 11c however, only two of the tests are directly labeled and keyed. The other ten are called using sequence g TEST n.
Below is a comparison table:
11C has 8 tests, all in the 10th column of keys:
x<=y
x<0
x>y
x>0
x not y
x not 0
x=y
x=0
For the 15c, look on the back of the calculator and you will see a table thus:
ERROR TEST MATRIX
0 | y/0, LN 0...| x not 0 | 0 DIM
1 | ---- | x > 0 | ------
2 | ------ | x < 0 |
etc.
So to get "X > 0" you key in g TEST n which is g followed by the minus key, followed by the number 1.
I hope that helps,
Bill
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