This task is similar to:
::*   [[Matrix multiplication]]
::*   [[Matrix transposition]]


;Task:
Implement basic element-wise matrix-matrix and scalar-matrix operations, which can be referred to in other, higher-order tasks.

Implement:
:::*   addition
:::*   subtraction
:::*   multiplication
:::*   division
:::*   exponentiation

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Extend the task if necessary to include additional basic operations, which should not require their own specialised task.
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