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Custom Functions

The Custom Functions feature in the CalcES Scientific Calculator allows you to create and use your own mathematical functions based on your particular requirements and preferences. This capability allows you to create functions like f(x)=2x+1 or g(x,y)=x2+y2 , incorporating parameters and complex expressions as needed. This feature is designed to streamline your calculations, enhance problem-solving efficiency, and enable personalized exploration of mathematical concepts.

Example 1

Hypot(x,y)=x2+y2
Hypot(x,y) = x^2+y^2

Example 2

CircleArea(r)=π×r2
CircleArea(r) = Pi * r^2

Steps to define a custom function

Example

Define a ConeVolume function that calculates the volume of a cone

Volume-of-a-Cone

Source: MathWorks

Steps

  1. Enter expression with parameters:

    Enter expression with parameters

  2. Tap and hold the input, the context menu is displayed. Select Create your custom function item

    the context menu is displayed

  3. The function information is displayed

    The function information

  4. Enter function name: ConeVolume, you can choose another name. Then tap Save button

    Enter function name: `ConeVolume`

    The expression field uses Symja syntax

    See more about Symja syntax

  5. List of defined functions is displayed. Tap Back button to back to calculator screen

    List of defined functions

  6. Press AC to clear screen, then open function menu by pressing SHIFT 6 (func)

    pressing `SHIFT` `6`

  7. Select ConeVolume that had recently defined

    Select `ConeVolume`

  8. Fill out the function parameters. Example radius=a=2.5 and height=b=3

    Fill out the function parameters Example `radius=a=2.5` and `height=b=3`