Seeing that we have a thread open for Year 11 3 Unit Cambridge, I have decided to open up a thread for Year 12 3 Unit Cambridge for all discussion on questions that students are working on.
I'll kick the ball rolling
EXERCISE 2A
Q5j
Been spending only 3 minutes on this but i got my final answer in radians, not exact value, as required in the question.
| B Eng (Hons) | IB Mathematics SL | IB Mathematics HL | Australian Cricket | Casual University Statistics Tutor
| B Eng (Hons) | IB Mathematics SL | IB Mathematics HL | Australian Cricket | Casual University Statistics Tutor
| B Eng (Hons) | IB Mathematics SL | IB Mathematics HL | Australian Cricket | Casual University Statistics Tutor
Last edited by Drongoski; 21 Feb 2016 at 8:25 PM.
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Wow, literally no one has commented on this thread
Speaking of year 12 maths topics (for extension 1) which would be the hardest maths topic and why? (e.g. in extension 2, Harder 3U is the hardest maths topic. Not sure why because I have never studied it)
Will post here anyway since I don't want to open a new thread for just one question.
How can you justify the particle changes direction without describing the motion beforehand?
Also, my teacher says you cannot use the phrase "simple harmonic motion".
Would it then be acceptable to instead describe the motion as "oscillatory"?
If I am a conic section, then my e = ∞
Just so we don't have this discussion in the future, my definition of the natural numbers includes 0.
cos(2θ)=7/25
2θ=cos^-1(7/25)
But θ = sin^-1(3/5)
So 2sin^-1(3/5) = cos^-1(7/25)
lol
Part a was harder
Need help with q22 ex 3e motion cambridge yr 12
a particle moves on a line and the table below shows some observations of its positions at certain times
t 0 .....................7.................. 9 ................ 11.... 18
x 0 .......... (not given) ..........(not given) ...... 2 ......... 0
complete the table if the particle is moving with constant acceleration
complete the table if the particle is moving in a simple harmonic motion iwth centre the origin and period 12 seconds.
im confused on how to use this table to find velocity and acceleration? any thoughts thanks
It was worded too horribly for me to figure it out when I looked at it being as tired as I am.
Here's the question to anyone else free to help formatted betterScreen Shot 2016-04-13 at 11.58.28 PM.png
EX 4D
Q18 c
Can get the remainder of 8, just not sure about my working out for the A(x). Q(x) part
| B Eng (Hons) | IB Mathematics SL | IB Mathematics HL | Australian Cricket | Casual University Statistics Tutor
| B Eng (Hons) | IB Mathematics SL | IB Mathematics HL | Australian Cricket | Casual University Statistics Tutor
For some people who do not have access to the textbook you should include the original question as well.
Side note good to see you've picked up LaTeX
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You missed one step.
=(Q(x)+Q(-x))(x^2-5)+8
After that you can draw your conclusion
That doesn't look like SHM though...
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Part d) looks like it wants to talk about the whole thing. If motion is in a way periodic then you'd probably have to refer to every say 2 seconds.
Part c) should be fine by just finding one case where v>0 and v<0
If I am a conic section, then my e = ∞
Just so we don't have this discussion in the future, my definition of the natural numbers includes 0.
| B Eng (Hons) | IB Mathematics SL | IB Mathematics HL | Australian Cricket | Casual University Statistics Tutor
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