PRECALCULUS, PLEASE HELP!

Find the indicated sum. Show your work. 4∑ (-1)^k(k+11). k=1
I've solved it, I just need someone to check my work.

PRECALCULUS PLEASE HELPFind the indicated sum Show your work 4 1kk11 k1Ive solved it I just need someone to check my work class=

Respuesta :

Hello from MrBillDoesMath!

Answer:

If n is even, sum =  n/2.

If n is odd, sum =  (n-1)/2  - 16


Discussion:

See attached doc and ask questions!

Thank you,

MrB

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