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If this is equivalent to GCSE, the British education system is rubbish. Here, the trig questions wouldn't be encountered (usually) until AS/A level (16-18).
Bristol. Don't think urself 2 lucky! Wouldn't wanna jinx the chance.
I'm making my claim based on my other offers, offers given out in previous years, and the standard offer conditions.
(80/2000000 x 100)%
I wasn't sure what 'matriculation level' was
Thank you
I'm definitely going with Cambridge as my firm. As for my insurance.....
(still to hear from Bristol, but I'm expecting an offer)
4. Easy given the fact that
Erm, rather unexpectedly, I received a letter this morning offering me a place to read Mathematics at Trinity College, Cambridge.
The conditions of the offer are pretty tough, though.
I'm absolutely over the moon
It wouldn't have anything to do with this, would it? http://en.wikipedia.org/wiki/Differentiation_under_the_integral_sign
Jane, would you mind providing another hint to this?
I think it's much quicker/easier/nicer to draw a triangle. The identities luca's used all come from triangles anyway.
Well the first part comes out from the sum of a geometric series:
Induction proves the second pretty quickly:
Obviously the first part could also be done (and more quickly) by induction, but I feel induction gets rid of the 'why' behind it. I'm sure you're going to show me a nicer way to do the second part
You're doing g first, then f, so the range of g must fit within the domain of f.
I received an offer from the University of Warwick the other day. They want AABb (I already have one A though) and either a 2 in STEP or a merit in AEA.
This has an infinite number of solutions i.e. every point on the line y = -3/5x + 3.
Does the question specify that x and y are integers? (this still has an infinite number of solutions and all of them lie on that line, but at least it actually gives some work to do).
Yep, just bothered to actually think about this.
Thanks.
Although, I seem to get that the x component of the acceleration is -gsinθ?
What's theta?
Could someone very briefly explain the method involved in dealing with a projectile fired up an inclined plane? (i.e. how are velocities and weights resolved etc).
Quick responses would be greatly appreciated.
Thanks.
I wrote:
, which I then integrated by parts (twice).I also had to spot to rewrite
as in the middle.Don't worry, I got it.
Could someone give me a hint please?
Thanks.
Ahh, thanks for sharing that
Also, "if three numbers are in arithmetic progression whose common difference is not a multiple of 3, at least one of them is divisible by 3" is pretty much what I stated in post #3
In fact, I've realised that if three numbers are in arithmetic progression, at least one of them is divisible by 3 unless the common difference is divisible by 3.
Easy to prove (by considering possible values of a and d (mod 3).
Maybe the reason I can't prove it is because it's not true.
4, 7, 10.
Prove that if three numbers are in arithmetic progression, at least one of them is divisible by 3.
Cos2x+Cos3x=0
Cos2x=-Cos3x
Cos2x=Cos(pi-3x)
1)2x=3x-pi->x=pi->cosx=-1
2)2x=pi-3x->x=pi/5
looks like something is wrong with your equation...
You're right.
I'm actually rather stupid.
The factor should be (x+1), in which case x = -1 does work, as we can let x = cosθ (which we have to do anyway). Also,
Thanks
The point of the question was obviously to work in the trigonometric form, as the value of phi s.t
isn't obvious.