Casio FX-115ES Scientific Calculator - Answered Questions & Fixed issues
Mixed fractions
When you get a fraction for he answer: shift-S<->D[a b/c<->d/c]
This way, you change it to a mixed fraction or improper fraction
My calculator fx-991 Es is showing either syntax
How about recreating the error and reporting faithfully the error message? You get a syntax error if you try to invert a matrix by using the wrong key sequence such a
[SHIFT][MATRIX][3:MatA][X to ] -1), meaning that you use the universal power key on the same row as X squared and log and between them.
To calculate the inverse of a matrix, have the name of the matrix on the command line, (see above) then press [X to -1] key one row up from [log].
Concerning your implied affirmation that if the matrix is square you should not be getting any error: You will get an error ( a Math error) if determinant of the matrix is equal to zero.
I have too many zeros after the decimal point.
If got to do with the mode settings. Usually MODE fix in other lower version of calculator. The combination can be MODE FIX 0 for no trailing zero's if MODE FIX ONE then if will 0.0 or one zero then shifting the settings to NORMAL mode and at DEG mode.
How do you turn off the fraction output. I want
Hello,
When you have a fraction output, press the [S<->D] key to convert to decimal, the same key to convert from decimal to fraction. Beware that fraction results are exact, while decimal values are approximate.
However if you cannot stand the sight of a fraction, there is a way to get rid of this type of output.
Here is how you do it.
[SHIFT][MODE][2:LineIO]. All your results will be in decimal. However you will lose a lot of functionalities, such as calculating the logarithm in any base, manipulating radicals.
My advice, if you allow, is to activate the [SHIFT][MODE][1:MathIO] and press the [S<->D] whenever you want a result (be it a fraction or radical) in decimal format.
Hope it helps.
How do I get my answer to stay displayed as I type the next input?
You can use the replay button to display the last command entered, then move cursor to the end of the command line and append the part you want to add. But it must be a part of the same command line, with correct syntax.
As to the last result calculated, it is stored in ANS memory. It will be overwritten by the new calculated value.
Problems with fractions on the Casio fx-115es
Hello,
To convert fractions to decimals or decimals to fractions, you use the [S<->D] key. Each time you press the key the result is displayed in the other format.
Alternatively, If you multiply or divide two integer numbers put a decimal mark at the end of one of the numbers (any one). The result will be displayed in decimal format.
Hope it helps.
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