Out of 8 Ratings

Owner's of the Casio Calculator fx-115ES gave it a score of 4.4 out of 5. Here's how the scores stacked up:
  • Reliability

    4.38 out of 5
  • Durability

    4.5 out of 5
  • Maintenance

    4.38 out of 5
  • Performance

    4.5 out of 5
  • Ease of Use

    4.0 out of 5
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In the case of simultaneous linear equations, you can use f and
c to switch the display between the solutions for X and Y (and
•When there are multiple solutions for a quadratic or cubic equation,
you can use the f and c keys to scroll the display between X1,
X2, and X3. The actual number of solutions depends on the
•Pressing A while a solution is displayed will return to the coefficient
editor screen.
The display format of solutions is in accordance with the input/
output format and complex number display format settings of the
calculator’s setup screen.
Note that you cannot transform values to engineering notation while
an equation solution is displayed.
Appendix Equation Calculation: <#091> to <#095>
Matrix Calculations (MATRIX)
You can save matrices under the names “MatA”, “MatB”, and “MatC”
in matrix memory. Matrix calculation results are stored in a special
Matrix Answer Memory named “MatAns”.
All calculations in this section are performed in the MATRIX
Mode (N6).
k Creating and Managing a Matrix
Creating a Matrix and Storing It in Matrix Memory
(1)In the MATRIX Mode, press 14(MATRIX)1(Dim).
• This displays the matrix selection screen.
•Note that the matrix selection screen also appears whenever
you enter the MATRIX Mode.
(2)Press a number key (1, 2, or 3) to specify the name of the
matrix you want to select.
• This displays a screen for configuring dimension settings.