3 years ago

Given the sequence rn defined recursively below, find r3. r1rn=2=−rn−1+n−2

Mathematics

1 answer:

kifflom [539]3 years ago

7 0

Answer:

$r_3=3$

Step-by-step explanation:

Given:

$r_1=2\\r_n=-r_{n-1}+n-2$

We want to find the value of $r_3$ .

$\\r_2=-r_{2-1}+2-2\\r_2=-r_1\\r_2=-2\\\\r_3=-r_{3-1}+3-2\\r_3=-r_{2}+1\\r_3=-(-2)+1\\r_3=2+1\\r_3=3$

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Independent Practice

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or He might've bought zero packages of 12, and 24 packages of 8.

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