Calculating nth Term of Sequences: What Now?

  • #1
BerriesAndCream
7
2
Homework Statement
The nth term of the sequence 2, 0, -2, -4, -6 ... is 4 times the nth term of the sequence -22, -20, -18, -16, -14, ... Work out the value of n.
Relevant Equations
.
I don't understand what the question is asking.

the nth term of the first sequence i can calculate to be -2n+4, while 2n-24 is the nth term for the second sequence. now what? The question isn't clear.
 
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  • #2
BerriesAndCream said:
Homework Statement:: The nth term of the sequence 2, 0, -2, -4, -6 ... is 4 times the nth term of the sequence -22, -20, -18, -16, -14, ... Work out the value of n.
Relevant Equations:: .

I don't understand what the question is asking.

the nth term of the first sequence i can calculate to be -2n+4, while 2n-24 is the nth term for the second sequence. now what? The question isn't clear.
If ##a_n = -2n + 4## is the n-th term of the first sequence, and ##b_n = 2n - 24## is the n-th term of the second sequence, what they're asking is this: For which value of n is ##a_n = 4b_n##?
 
  • #3
Mark44 said:
If ##a_n = -2n + 4## is the n-th term of the first sequence, and ##b_n = 2n - 24## is the n-th term of the second sequence, what they're asking is this: For which value of n is ##a_n = 4b_n##?
oh... all clear now. thank you.
 
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