The total number of lights in a triangular rig with n rows is given by the function T(n) as given. Find the number of lights in triangular rigs with 1 to 10 rows.

T(n)= 1/2n^2+1/2n

Question

The total number of lights in a triangular rig with n rows is given by the function T(n) as given. Find the number of lights in triangular rigs with 1 to 10 rows.

T(n)= 1/2n^2+1/2n

anonymous · Answer

I dont get your question. I am slow -.-

agent0smith · Answer

Find the number of lights in triangular rigs with 1 to 10 rows.

Looks like you just need to plug each of n=1, n=2, n=3,..., n=10 in to the function, one at a time.

anonymous · Answer

@agent0smith I don't get it?

1, 3, 6, 10, 15, 20, 25, 30, 35, 40
1, 3, 6, 10, 15, 22, 29, 37, 46, 56
1, 3, 6, 10, 13, 16, 20, 23, 26, 30
1, 3, 6, 10, 15, 21, 28, 36, 45, 55

these are my answers?

agent0smith · Answer

Plug in n=1 into  1/2n^2+1/2n and see what you get.
Then do n=2, then n=3 and so on till n=10

anonymous · Answer

I got it! I got 1,3,6,10,15,21,28,36,45,55 thank you

agent0smith · Answer

Good job :)