How can we find the first five terms of sequence given below?
a1=7; an=an-1 – 4, n>=2
By pluggin in numbers...
a_1 = 7
a_n = a_(n - 1) - 4, n >= 2 (you really need to use parantheses here).
To find a_2, let n = 2. Then we have:
a_2 = a_(2 - 1) - 4 = a_1 - 4 = 7 - 4 = 3.
You use the same technique to find the rest of the numbers.
Yeah, I guess that works too. ;)
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