# EulerE constant

When authoring an exercise, it might be the case that you want to use the Euler $e$ instead of the variable $e$, or that you want to use both next to each other in the exercise. Below, both options are explained:

Using the Euler $e$:

Go to the Symbols tab at the top of the exercise, and add $e$ as a constant.

You can now author the question as you intended and use the textual e where ever you want to refer to the Euler $e$.

Using the Euler $e$ and variable $e$ in the same exercise:

Go to the Symbols tab at the top of the exercise, and add $e$ as a multiple. Next, add two entries. One for constant, and one for variable. Give both entries a name. For example:

You can now author the question as you intended, except you have to use the names you just created to refer to the specific item. So you use $eEul$ if you want to refer to the Euler $e$ and $eVar$ if you want to refer to the variable $e$.

The student can still write $e$ to refer to both inputs, and AlgebraKiT will match which of the two $e$ definitions is intended.