help pls

Question

help pls

anonymous · Answer

attachment

anonymous · Answer

a.      0^3 + 3^3

 b.      0^3 + 1^3 + 2^3

c.       1^3 + 2^3 + 3^3

  d.     0^3 + 1^3 + 2^3 + 3^3

anonymous · Answer

0^3 = 0*0*0
What does this evaluate to?

rainbow_rocks03 · Answer

Sorry I don't know that but you will pass! :)

anonymous · Answer

b?

anonymous · Answer

Oh, I missed the link. Ok. Summations.

$$\sum_{i=0}^{3} i = 0 + 1 + 2 + 3$$
You just plug in the starting number (0 in this case) everywhere that you see i, then you add to that the next number, and so on until you reach the number on top of the sigma (The big E looking thing)

What do you get when you do this for your problem?

anonymous · Answer

Another example:
$$\sum_{i=0}^2 i^2 = 0^2+1^2+2^2$$

anonymous · Answer

i honestly have no idea

anonymous · Answer

Your problem is:
$$\sum_{i=0}^3 i^3$$
Expand this like I did the two examples. Plug in 0 (the number on the bottom that we start with), then the next integer (1), and the next, until you've plugged in the number on top.