simple question:) ::: Binomial ratio coeff. thing------- Do u havta derive this ratio (1 Viewer)

[lillaila]

Do u havta derive T(k+1)/T(k) everytime even when not asked for derivation in questions?......or can u just memorise the formula:
(n-k+1)/k x b/a

 

[BlackJack]

Well, not for us... but I didn't need it anyway.

 

[Lazarus]

You can just memorise it.

 

[Affinity]

Lazurus are you sure? My teacher specified that has to be derived every time.

 

[CHUDYMASTER]

Yeah, you've gotta derive it, but even after you do so many questions, it always follows a pattern. Of course, for that you *do* have to know how to expand nCk...you do know how to do that, yes?