Question

Find the 10th term of the sequence whose nth term is given by the formula tn= (-1)^n+1/n

Answer 1

where you see an \(n\) replace it by a \(10\)

Answer 2

so is it -1/10?

Answer 3

not the way i read it no

Answer 4

is it
\[t_n=(-1)^n+\frac{1}{n}\] or
\[t_n=(-1)^n\times \frac{1}{n}\]?

Answer 5

no its tn (-1) ^ n+1/n

Answer 6

its either -1/10, 1/10, -1/7 or 1/7

Answer 7

\[(-1)^{10}+\frac{1}{10}=1+\frac{1}{10}=\frac{11}{10}\] so perhaps it is not the right \(t_n\)

Answer 8

unless you mean
\[\frac{(-1)^{n+1}}{n}\]
could that be it?

Answer 9

yes

Answer 10

thats what I meant to put

Answer 11

then compute
\[\frac{(-1)^{10+1}}{10}\]

Answer 12

thats what I thought thanks :)

Answer 13

yw