Question

I've got a sigma notation question - can someone answer?

Answer 1

evaluate:

the sum as K goes from 4 to 7 of root(2k-1)

i got root7+root11+root13+3.....correct?

Answer 2

\[\sum_{k=4}^{7}\sqrt{2k-1}\]

Answer 3

That's the right answer, but the term 3 should be after root 7, but that's trivial since you can add in any order.

Answer 4

yeah - i got it after root 7, just moved it to the end to keep like terms collected.....but it's right?

Answer 5

yeah, that looks solid

Answer 6

thanks guys

Answer 7

sure, np