Mathematical Methods CAS Exam 2 Discussion - How was it??

[kenny_]

Was Q21 the Pr(P' intersection Q) one? is it Pr(P) = 1/2?

[Andiio]

Oh right phew... thought I missed a question or something LOL

Was Q21 the Pr(P' intersection Q) one? is it Pr(P) = 1/2?

Thats what I got, hopefully it's right?

[b^3]

First one, gave you dv/dt and required you to find t=45 mins.

LOL! Question 22 is in the essentials textbook. I remembered asking my teacher than question during the course of the year <3

YEY, I was sitting there and thinking, they can't possible want us to do the spesh way, so originally I did the intial volume and took away the rate*t. I got some absoluetly weird answer, rubbed it out and did it the spesh way, a wave of relie came over me when a nice 45 poped out.

[thatisanote]

Oh right phew... thought I missed a question or something LOL

Was Q21 the Pr(P' intersection Q) one? is it Pr(P) = 1/2?

Thats what I got, hopefully it's right?

Yeh I think that was right based on the karnaugh map i did, can anyone confirm?

[ttn]

Oh right phew... thought I missed a question or something LOL

Was Q21 the Pr(P' intersection Q) one? is it Pr(P) = 1/2?

Thats what I got, hopefully it's right?

Yeh I think that was right based on the karnaugh map i did, can anyone confirm?

That's what I did and got as well

[t5am94]

Thank you maths methods for destoying my vce score and my confidence

[BorisPeters]

Yeh, grr, and I remember thinking in the morning, hmm, I wonder if the state will get raped by linear independence. I had the DAMN FORMULA on the front of my book and thought, no 1/2 is a ridiculous answer as clearly it's the oddball one you elmininate. WHY DIDN"T I TEST IT GRRRRRR.

@Nacho, with no disrespect in my saying this, but if you don't think you were able to solve every question then time constraints don't come into it for you. I worked til the very last second.

Overall, exam was one of the easier ones so far. It's just inability to properly cope with pressure made it seem difficult for some of you. I guarantee you the A+ cut-off is going to rise.

The answer is E. Congratulations to anybody who got it.

[b^3]

Oh right phew... thought I missed a question or something LOL

Was Q21 the Pr(P' intersection Q) one? is it Pr(P) = 1/2?

Thats what I got, hopefully it's right?

Yeh I think that was right based on the karnaugh map i did, can anyone confirm?

That's what I did and got as well

Wow I totally forgot about the karnaugh maps.

[BubbleWrapMan]

For independent events Pr(P) x Pr(Q) = Pr(P n Q)

Since Pr(P n Q) = Pr(P' n Q), Pr(P n Q) = 1/2 Pr(Q)

Pr(P) x Pr(Q) = 1/2 Pr(Q)

.'. Pr(P) = 1/2

[dking123]

first short answer i tried out both methods of integration and like 6075- something =0
i wrote the integration working out but then use the wrong answer
FML

[extcar]

wat was the first short answer question again??

[nacho]

wat was the first short answer question again??

something about a godly man named after a mexican food trying to find peace in the universe, where t is equal to the time after he finishes his cereal in the morning and p is when peace is finally, acquired. p is a function of t.

[mjwalka]

Anybody have their calculator permanently load and basically freeze during the prob part of extended response? Happened to me and a mate, i was shitting myself lol.

[cltf]

Exam content aside...did anyone dislike the time slot for the exam 11:45 -2pm. A bit early for lunch, and once you were done A) it was kinda late for lunch and B) YOU WERE IN NO MOOD FOR LUNCH, CAUSE YOU WERE ALLZ CRYING.

[ARMYMAN0010]

For Q1 part a, was it correct to say
dV/dT= -t^2/5 => V(T)=-t^3/15+C
since V=6075 at t=0, constant is 6075. Solving V(t)=0 gives t=300 or something..?

+Yes, totally agree. Not enough time, and I wanted lunch by the end