A sequence is defined by .

Other · Multi-part · ISC · Mathematics · Algebra · Arithmetic progressions

Problem

A sequence is defined by

u_n = \frac{71 - 7n}{2}

. (1) Prove that the sequence is arithmetic. (2) Find

u_1

and

d

. (3) Find

u_{75}

. (4) For what values of

n

are the terms of the sequence less than -200?

Related theory

Browse the problem library