[f4] math

DicKiT

回復 10# -終場ソ使者-
但佢要show 到個relation between (a) and (b)出黎

[H]bunbunbunbun

回復 8# p445hkk20001

method of difference
Its much more useful when doing summations involving partial fractions
I reckon this is an example only

basically part a shows that f(x)= g(x)-g(x-1)

so summing f(x) from a to b = summing g(x)-g(x-1) from a to b = g(a) - g(a-1) + g(a) - g(a) +g(a+2)- g(a+1)+...+g(b) -g(b-1)=g(b)-g(a-1)

-終場ソ使者-

回復  p445hkk20001

method of difference
Its much more useful when doing summations involving parti ...
[H]bunbunbunbun 發表於 13-9-2010 01:40

Actually, we have not learnt such a Method of difference in M1/M2@@
In that case, using basic concept of summation is already enough.
They may not ace the mothod that you've told.