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Arithmetic
Reading time: 1minChecks if a progression is arithmetic or not. An arithmetic series is the sum of a sequence in which each term is computed from the previous one by adding (or subtracting) a constant d:
ak=ak-1+d=...=a1+d(k-1)
Syntax
arithmetic?(Progression)
arithmetic?(Expression, Identifier)
Description
Given a progression, returns a list. If the progression is not arithmetic, the list just contains an element: false. Else, the list has two elements: true and the value d, following the notation above.
Given the expression of the general term and the variable, returns a list. If the progression given by the expression is not arithmetic, the list just contains an element: false. Else, the list has two elements: true and the value d, following the notation above.
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