Find the 10th term of the sequence whose nth term is given by the formula tn = (-1)n+1/n.
A. -1/10
B. -1/7
C. 1/7
D. 1/10

Question

Find the 10th term of the sequence whose nth term is given by the formula tn = (-1)n+1/n.
	A.	-1/10
	B.	-1/7
	C.	1/7
	D.	1/10

anonymous · Answer

you should rewrite this. The present notation is too vague

anonymous · Answer

Truh, none of the answers is right the way you wrote it.

anonymous · Answer

Thats how my school wrote it...

anonymous · Answer

sorry Find the 10th term of the sequence whose nth term is given by the formula tn = (-1)^n+1/n.
	A.	-1/10
	B.	-1/7
	C.	1/7
	D.	1/10

anonymous · Answer

something is still off

anonymous · Answer

Yes, something still missing.

anonymous · Answer

That is exactly how it looks on my homework

anonymous · Answer

are we supposed to be solving for t? or is that t(n) where n is a function of t

anonymous · Answer

You should recheck your homework again. There is an error somewhere (either answer bank or notation)

anonymous · Answer

Its horrible quality but here is a picture of my homework

anonymous · Answer

there it is (n+1) is the exponent

anonymous · Answer

$$t _{10}=(-1)^{10+1}/10=\frac{ -1 }{ 10 }$$
the trick to see here is quickly tell if the exponent will yield a positive 1 or negative 1. -1 raised to an even power is positive while -1 raised to an odd power will be negative. so we can know (-1)^102938449942002 will be = 1 since the exponent is even

anonymous · Answer

so its D

anonymous · Answer

look again @Partycool

anonymous · Answer

sorry A got mixed up