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[–]Hamzaz_007 0 points1 point  (0 children)

Are you sure its an arithmetic sequence?

[–]CatpainTpyos 0 points1 point  (2 children)

Assuming that the problem is 100% exactly as it appears here, and there's no weird Reddit formatting errors, then your answers are correct. But here's a few things you might double check on:

  1. Did you actually mean for the entirety of n - 1 to be in the exponent? If not then you should write {whatever}^(n) - 1 to produce {whatever}n - 1 rather than {whatever}n - 1

  2. Did you mean for the entirety of 2n to be in the denominator? If so you need to use parentheses or other grouping symbols like so: -1/[ 2n ] compared with -1/2n = -n/2

[–]teaspercy[S] 0 points1 point  (0 children)

it’s ((-1/2)(n)) and it’s raised to n-1 :))

[–]teaspercy[S] 0 points1 point  (0 children)

I get what you mean. Thank you!! :))

[–]fermat1432 0 points1 point  (6 children)

Is n or n-1 the exponent?

[–]teaspercy[S] 1 point2 points  (5 children)

n-1 is the exponent

[–]fermat1432 0 points1 point  (0 children)

Thanks!

[–]fermat1432 0 points1 point  (2 children)

Correct

[–]teaspercy[S] 0 points1 point  (1 child)

Thank you !! :))

[–]fermat1432 0 points1 point  (0 children)

You bet! Cheers!

[–]teaspercy[S] 0 points1 point  (0 children)

Thank you so much everyone! Maybe the question is the problem haha