Question

Suppose the general term of a sequence is T(n)=n^(2)-10n+18.
(a) Which two terms of the sequence are equal to 2?
Ans: 2nd and 8th (GOT IT)
>>>>(b) Is 200 a term in the sequence?

Answer 1

@Peter14

Answer 2

so you're looking for 200=n^2-10n+18
solve it like a quadratic equation

Answer 3

n=19.38749457 OR -9.38749457

Answer 4

for a sequence you can only use integral values of n

Answer 5

so does the sequence have a term=200?

Answer 6

ummm... substitute n=19/20??

Answer 7

what?

Answer 8

errr....

Answer 9

is it the factor=the term 200?

Answer 10

when I learned about sequences the teacher said that you can only use integral values of n

Answer 11

i know

Answer 12

since the two values that would make x^2-10x+18=200 are not integral, 200 is not a term in the sequence. does that make any sense?

Answer 13

ah, so if n is integer, then 200 is the answer?

Answer 14

if you can get 200 by putting an integer in for n, 200 would be a term in the sequence.

Answer 15

oh, i understood now:) thanks

Answer 16

anything else?

Answer 17

yup, about trigonometry