Can you show me how to evaluate an equation with the sigma? I'll attach a picture.

Question

anonymous · Answer

attachment

loser66 · Answer

n goes from1 to 4 that means you have 4 terms,
now, first term n=1 what do you have ? just plug n=1 into (2n-1) , tell me what you have?

anonymous · Answer

1?

loser66 · Answer

yeah!!! got the first term , 
now second term n=2 , what do you have?

anonymous · Answer

3, then for the 3rd term it'd be 5 and for the 4th term it'd be 7?

loser66 · Answer

why are you smarter than me?? ohoh,, I lost my job with that smart girl

anonymous · Answer

Hahaha(:

loser66 · Answer

however, you still have 1 more step, add them up. do it!!smartgirl

anonymous · Answer

So it'd be 28?

loser66 · Answer

do you know why you have to add them?

anonymous · Answer

Because sigma means the sum of all the numbers?

loser66 · Answer

1+3+5+7=? cannot be 28 , girl!! =????

anonymous · Answer

Oh wait, I was adding the numbers from another problem I was doing concurrently, sorry! @Loser66