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patriot [66]
3 years ago
5

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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alex41 [277]
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Hopefully you can figure out C on your own! I feel a little bad for giving a partial answer but I think you can do this!

Percentage calculator used-https://percentagecalculator.net/
Note: can't handle commas, remove all commas before entering data in.
7 0
3 years ago
What is another way to write 300+20+5
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