i came up with and proved this shortcut myself its for finding the difference in an arithmetic series when two non-consecutive values. i.e., A sub 3 and A sub 56 given: difference (d) = A sub(n+1) - A sub(n) n > 0 c > 0 assume all () mean sub from now on ______________________________________________________ prove: A(n+c)-A(n) __________ = d (n+c)-(n) ______________________________________________________ so A(n+c) - A(n) = (c)(d) and (n+c) - (n) (n) + (c) + (-n) = (c) therefore A(n+c) - A(n) (c)(d) ___________ = _____ = d (n+c) - (n) (c) think this was awesome? donate to me for no reason! think i'm stupid? please tell me so in great detail!
lol its ``spam`` no way ! its smart! i like math and don`t even know what is going on with this lol ! but good job !
