Huh, are parts (i) and (iii) of Q1 really that valuable?
No, but like you said, you got tantalisingly close to finishing off part (ii) and picked up virtually all the method marks bar two or three. Even if not, you've got a 6-ish mark buffer before your chances of a 1 go that low. I think you're pretty much into Camb at this point.
Any idea how many marks would be lost for Q8 if you just assume g(x) = whatever they gave and showed it fitted the relation given?
I think it possibly depends on if you did the next part with h(x) or not. If you did it, it suggests that you could have done the part with g(x) properly if you'd known you had to, so they might be more generous than with people like me who had no idea how to do it properly.
No, but like you said, you got tantalisingly close to finishing off part (ii) and picked up virtually all the method marks bar two or three. Even if not, you've got a 6-ish mark buffer before your chances of a 1 go that low. I think you're pretty much into Camb at this point.
Thought it was broadly okay-ish. Better than II anyhow. I'm fairly sure I've got 1, 2, 1 at this stage. Makes for a pretty *****y summer where I can only hope that the summer pool has mercy on me. But oh well, c'est la vie.
I think it possibly depends on if you did the next part with h(x) or not. If you did it, it suggests that you could have done the part with g(x) properly if you'd known you had to, so they might be more generous than with people like me who had no idea how to do it properly.
What you have said seems fair. How many marks do you think that part was ?
Thought it was broadly okay-ish. Better than II anyhow. I'm fairly sure I've got 1, 2, 1 at this stage. Makes for a pretty *****y summer where I can only hope that the summer pool has mercy on me. But oh well, c'est la vie.
Best of luck. Even if you do "only" get 121 I am sure they will work out from your scripts that you are a "keeper".
Would anyone mind giving me a rough estimate 1- Did i) and iii). Made a good stab at ii) at simplifying but didn't reach a point where I could use by parts to get the result 2- Got everything right I think. Iffy with T though because the y coordinate contained a term with p in...so how is it independent of p? 3- I did it all but I felt like I was no where near general enough. I think I reasoned Q(x) has a factor of (x+1) wrong by just saying Q(x)^2 must be (x+1)^2 therefore its +-(x+1). Then using the fact that Q(x)=x+1 to get a degree 3 numerator I reasoned P must be degree 2. Found P(x) no problem. Similar story with ii) argued that Q(x) must be +-(x+1) therefore argued P(X) must be a constant and then got a contradiction 7- Justified the very first part correctly and thats it 8- Did all of it. But I assumed g(x)=2x/(x^2+1). 9- got the Extension and the Tension in RX correctly. Made a stab at getting the equation of motion and getting the other two tensions (said T QX =T RX). Algebra looked too daunting to do F=ma so I just wrote what I would do and what omega would turn out to be .
Would anyone mind giving me a rough estimate 1- Did i) and iii). Made a good stab at ii) at simplifying but didn't reach a point where I could use by parts to get the result 2- Got everything right I think. Iffy with T though because the y coordinate contained a term with a in...so how is it independent of p? 3- I did it all but I felt like I was no where near general enough. I think I reasoned Q(x) has a factor of (x+1) wrong by just saying Q(x)^2 must be (x+1)^2 therefore its +-(x+1). Then using the fact that Q(x)=x+1 to get a degree 3 numerator I reasoned P must be degree 2. Found P(x) no problem. Similar story with ii) argued that Q(x) must be +-(x+1) therefore argued P(X) must be a constant and then got a contradiction 7- Justified the very first part correctly and thats it 8- Did all of it. But I assumed g(x)=2x/(x^2+1). 9- got the Extension and the sexual tension in RX correctly. Made a stab at getting the equation of motion and getting the other two tensions (said T QX =T RX). Algebra looked too daunting to do F=ma so I just wrote what I would do and what omega would turn out to be .
Any ideas?
For 2, I think that's right because a is just a constant, and so is independent of p.
Would anyone mind giving me a rough estimate 1- Did i) and iii). Made a good stab at ii) at simplifying but didn't reach a point where I could use by parts to get the result 2- Got everything right I think. Iffy with T though because the y coordinate contained a term with a in...so how is it independent of p? 3- I did it all but I felt like I was no where near general enough. I think I reasoned Q(x) has a factor of (x+1) wrong by just saying Q(x)^2 must be (x+1)^2 therefore its +-(x+1). Then using the fact that Q(x)=x+1 to get a degree 3 numerator I reasoned P must be degree 2. Found P(x) no problem. Similar story with ii) argued that Q(x) must be +-(x+1) therefore argued P(X) must be a constant and then got a contradiction 7- Justified the very first part correctly and thats it 8- Did all of it. But I assumed g(x)=2x/(x^2+1). 9- got the Extension and the Tension in RX correctly. Made a stab at getting the equation of motion and getting the other two tensions (said T QX =T RX). Algebra looked too daunting to do F=ma so I just wrote what I would do and what omega would turn out to be .
Any ideas?
15 + 18 + 12 + 3 + 12 + Q9 = 60 + Q9 = fairly confident this is a 1.
15 + 18 + 12 + 3 + 12 + Q9 = 60 + Q9 = fairly confident this is a 1.
Thank you very much. Do you really think the g(x) thing was 8 marks? (I noted you said you made a similar mistake in assuming you could just show it satisfied)
Thank you very much. Do you really think the g(x) thing was 8 marks? (I noted you said you made a similar mistake in assuming you could just show it satisfied)
Probably a bit less than 8 marks, I think, but I'm being harsh.