`a_n = a_1 +( n -1)* d `

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[Math| Series| Sequence| Counting] Finds the last term in the arithmetic sequence. Consider a finite arithmetic sequence with n terms in which a₁ is the first term, a_n is the last term, and d is the common difference.

Inputs for formula:

n is the number of terms in the sequence

a₁ is the first term in the sequence

d is the common difference

 

Output for formula:

returns the last term of an arithmetic sequence