ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Mathematical Methods CAS => Topic started by: jimbothebest on October 19, 2011, 11:21:25 am

Title: Formulas needed for tech free
Post by: jimbothebest on October 19, 2011, 11:21:25 am
Hey,
Just wondering if anyone out there has maybe a specific document that has all the formulas that are needed to be remembered for the tech free exam. This obviously doesn't include everything on the formula sheet, but things like general solutions and steady state formulas I'm just a little unsure of exactly what I will need to remember in that respect for the tech free paper.
Thanks  :)
Title: Re: Formulas needed for tech free
Post by: Anon123 on October 19, 2011, 05:32:21 pm
everything except the stuff on the formula sheet?...

and yes, it is very likely there will be at least one question requiring general solutions
Title: Re: Formulas needed for tech free
Post by: jimbothebest on October 19, 2011, 06:52:11 pm
Yeah thanks, I know that obviously! Just if there's any other specific ones like general solutions formulas that you have to remember... and yeah I've come across quite a few of those questions in the praccys
Title: Re: Formulas needed for tech free
Post by: panicatthelunchbar on October 19, 2011, 08:07:56 pm
general solutions in Exam 1? I've seen them in exam 2, but do they also appear in exam 1?
Title: Re: Formulas needed for tech free
Post by: homosapiens on October 19, 2011, 08:17:48 pm
Quote from: panicatthelunchbar on October 19, 2011, 08:07:56 pm
general solutions in Exam 1? I've seen them in exam 2, but do they also appear in exam 1?
Yep, they're doable by hand so probably best to know the general formulas

Also I guess it's best to know the ones we learnt years ago, ie distance between two points, quadratic formula etc.
Title: Re: Formulas needed for tech free
Post by: Ematuro on October 21, 2011, 06:32:29 pm
yeah definately those formulas. I just did the vcaa 2007 today exam 1 and it required dist between two points which I had forgotten. Thankfully, it can pretty much be derived from pythagoras :)
Title: Re: Formulas needed for tech free
Post by: vgardiy on October 21, 2011, 09:31:12 pm
For X~Bi(n,p)
E(X)=np
Var(X)=npq=np(1-p)