Mathematics: Post your doubts here!

[Somaiyah]

(3^1/3,0) don't remember the other one.

(1, -2)?

Is this that implicit function question? (I didn't give the paper so asking for a friend so need to be sure..)

 

[Nushad Nahue]

Hi guys.

What do you think the total uniform mark threshold for a B should be? I had M2 and I am crazy wrried cause the exam was very tough for me and honestly, I'll be lucky if I get over a 20. I have to get at least a B as per uni conditions. Each year it varies from 155-165 but since P3 was easy, well, I don't know. Does anyone here know the system well enough to make a rough guess? I had an 82% in AS and P3 was pretty good so I hope overall it rounds to a B.

 

[Jihoo Lee]

Can I use 10ms^-2 for g in mechanics or should I use 9.81? Cuz my coursebook uses g=10. Or it doesn't matter?

 

[hellodjfos;s'ff]

Can I use 10ms^-2 for g in mechanics or should I use 9.81? Cuz my coursebook uses g=10. Or it doesn't matter?

It matters whether you use 9.81 or 10 as g. For maths, you are required to use 10 as g, but in physics you are required to use 9.81 as g. You can lose several marks for incorrect answers if you don't use the correct value for g.

 

[DentedBend]

How was P2? Most people found it easy :'( It wasn't that bad for me just a couple mess ups.

But then I remembered about P1. I cried my way home (((((
It's going to be a very anxious holiday.

 

[ArchmageShalidor]

Does anyone remember the equation in the implicit differentiation part?

 

[ba-lock-ey]

Not looking forward to A2 math.

 

[A*****]

Hi guys.

What do you think the total uniform mark threshold for a B should be? I had M2 and I am crazy wrried cause the exam was very tough for me and honestly, I'll be lucky if I get over a 20. I have to get at least a B as per uni conditions. Each year it varies from 155-165 but since P3 was easy, well, I don't know. Does anyone here know the system well enough to make a rough guess? I had an 82% in AS and P3 was pretty good so I hope overall it rounds to a B.

How do u know ur AS %age marks?

 

[hellodjfos;s'ff]

How do u know ur AS %age marks?

You can find it on your statement of results.

 

[Chirag Dhakal]

need help for AS level maths? Remember me.

 

[Jihoo Lee]

Does anyone have pdf of Mechanics 3&4 by Douglas Quadling and Statistics 3&4 by Jane Miller??

 

[Mush999]

Where am I going wrknf in THIS working?
I can do by other method and making x subject and get the correct answer but why am i getting wrong answer here?

 

[hellodjfos;s'ff]

Where am I going wrknf in THIS working?
I can do by other method and making x subject and get the correct answer but why am i getting wrong answer here? View attachment 64214

When you wrote 0.5x+0.5k=sqr root(2x)
To remove the sqrt root, you didn't expand 0.5x+0.5k correctly.
You were meant to expand it like this: a^2+2ab+b^2.
That's your only mistake.

 

[Mush999]

Ohhhhh yes! Got it. Thank you!

 

[sukasukinya]

Can someone tell me why for the answer, we only use one of the range that we got? The answer is only x less than 5/3

 

[IN NEED OF HELP]

guys please help...
What will be american GPA if I get 2 C and 2 D in ALevels....?
Please help me in selecting four years college and my SAT score is 1300. I also have 2.6 GPA but it didn't

 

[I Only ask questions]

a motorbike and a car are waiting side by side at traffic lights.
when the lights turn green, the motorbike accelerates at 2.5 ms^-2 up to a top speed of 20ms^-1 and the car accelerates at 1.5 ms^-2 up to a top speed of 30ms^-1. both then continue to move at a constant speed. draw (t,v) graphs for each vehicle, using the same axes, and sketch the (t,s) graphs.
A. after what time will the motorbike and the car again be side by side?
B. what is the greatest distance that the motorbike is in front of the car?
Can you help me with no. B and I got 22 seconds for a).
the answers say 160/3 is the answer for b) but how?

 

[Hamnah Zahoor]

Do we need to prepare for paper 2 and paper 3 both in order to give Pure mathematics 3 in A level Math!

 

[A*****]

Do we need to prepare for paper 2 and paper 3 both in order to give Pure mathematics 3 in A level Math!

I don't think so

 

[Hamnah Zahoor]

I don't think so

Ok.......I have read in the syllabus that paper 2 is a subset of paper 3 but paper 3 contains some additional topics from Paper 2.