The Student Room Group
kikzen
How do you sort out things with ! signs?

like the thing attached.. what are the rules for dealing with tehse things?


x! = x.(x-1).(x-2)....3.2.1

(x+1)! = (x+1).x.(x-1).(x-2).....3.2.1 = x!.(x+1)

Can you finish from there?
Reply 2
It'sPhil...
x! = x.(x-1).(x-2)....3.2.1

(x+1)! = (x+1).x.(x-1).(x-2).....3.2.1 = x!.(x+1)

Can you finish from there?

ingenious, are there any other things like this, or is it all similar ?

yeah i can finish off..

Latest