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Posted on Jan 02, 2017
You need a SHARP with Write-View display capabilities. The EL-531X is unable to show that. The Write-View calculators from Shard have a W, example EL-W516 followed by Write-View. Not to be confused with the W in EL-520W
Posted on Feb 24, 2013
First you have to set the calculator in STAT mode, presumably Standard Deviation or SD. The display should show a STAT annoucer to the top. To enter values use the key M+ (or the key next to which is marked DATA. The screen displays the number of data values entered so far.
To get the statistics you must use the keys marked with x bar, n, Sigma x, etc.
Posted on Mar 02, 2013
I doubt that it has a glitch. Although possible, it is not very probable. Try to use the calculator correctly.
Follow the algebraic logic.
If you did not input any value the answer memory contains the value 0.
When you press (+/-) followed by [=] it takes the value in answer memory and negates it, thus giving you (-0).
Adopt a consistent way of inputting numbers, namely always enter the negation sign before the number that is negated. The calculator will enclose the negated number between parentheses, which prevents may errors. Too bad this feature has not been kept in more recent calculators by Sharp.
Posted on Dec 04, 2013
Use the Alpha keyboard to enter the left side of your equation. While equation is still on command line, activate the SOLVE application (Math). Enter a first guess, the increment and press =.
Press = to repeat the solution for the next root.
To help you practice, one root is negative and near -2, the second is positive and about 5.5.
Posted on Jan 20, 2014
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