Although this has nothing to do with math, I found it pretty funny.
Two guys are on a boat for a private cruise. Overnight while sleeping they don't realize that the whole crew including the captain had abandoned ship leaving them alone and the ship sinking. They got into a raft and were floating on the ocean for days. One day one of the men came across a lamp floating in the ocean, one that resembled the lamp out of Aladdin. Following the usual procedure he rubbed the lamp and of course a genie popped out. The genie said "Okay, I've been doing this 3 wish thing for quite a while now, so you only get one wish"...
The first man who had been deprived of water for so long , panicked and blurted out "I wish we had a lifetime supply of beer" and *Poof* .. The genie changed the ocean water into beer.
The second man said "Great going Einstein, now we have to math in the boat" .
Its actually a quite simple web address for these type of things.
Once there, they have a wide selection of gifs..If you want one like mine click "everything else" and then click "kaleidoscopes"
Not much gifs in that category that I liked , besides the one I have now .
Hope you find one you like.
I didn't give any thought to 3 but just hold on Ill try to solve it.
(Did you come up with these yourself?)
What I don't understand is , in the method they describe on your link its Xn. Two variables meaning two unknowns.
The method I was described we didn't have x, only n. N would represent the term. For example your question..
For the first term N = 1 , and since the answer is n^2+3 the equation would be .
1^2+3 = 4
Next term N=2... 2^2+3= 7, and so on.
What I don't get is what are they representing by x?
3) N^2 + N
1) N^2 + 3
The link you sent me makes no sense. It brings in two variables to find the answer.
Haven't been taught that so not quite grasping the concept.
I know that for 2) You have to add the two previous numbers to get the next , but can't figure out how to write it as "The nth term"