I just wanted to say that I really appreciate this forum. I'm doing some power studying for a college algebra test (I'm in high school) so I appreciate the help with the "power studying" I'm doing.
Take a look at this sigma-related problem...
Answer: (2h)A ball is dropped from a height of h feet and repeatedly bounces off the floor. After each bounce, the ball reaches a height that is of the height from which is previously fell. For example, after the first bounce, the ball reaches a height of h feet. Which of the following represents the total number of feet the ball travels between the first and the sixth bounce?
I understand how sigma works and stuff, but why 2h ? Why the "2" in 2h? I don't see anywhere in the actual problem where is calls to double something? Thanks... I'm sure it's something simple I'm forgetting...
for example (a simple one) :
It's the sum of the expressions with all the possible values of n, that is to say 1 to 4. I don't know if it's clear enough...
Hehe, I'll try to do it the way Soroban does
Edit : too slow