Precalculus Examples

, , ,
This is an arithmetic sequence since there is a common difference between each term. In this case, adding to the previous term in the sequence gives the next term. In other words, .
Arithmetic Sequence:
This is the formula of an arithmetic sequence.
Substitute in the values of and .
Simplify each term.
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Apply the distributive property.
Multiply by to get .
Simplify the expression.
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Remove unnecessary parentheses.
Subtract from to get .
Substitute in the value of to find the th term.
Multiply by to get .
Subtract from to get .
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