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Just finished my maths P1 mock

Wohoo. Piece of cake! Everyone said it was pretty hard except a few, the hardest questions were:

2sin x tan x = 3
find all values of x within the range 0 < x < 360

and one part which required to prove that

3√x + 12/√x = 9√2
when x = 8

pretty tricky for P1, but I got it after some manipulation. :biggrin:

ahh, the relief!

Scroll to see replies

Reply 1

SunGod

How do you do both of them?

Reply 2

john !!

3√x + 12/√x = 9√2

3√8 = 6*0.5*√8 = 6*√0.25√8 = 6√2

12/√8 = 3(4/√8) = 3(4√8/8) = 3(2^2*8^(3/2)/2^3) = 3(2^*7/2)/2^3) = 3√2

6√2 + 3√2 = 9√2

Reply 3

john !!

2 sin x tan x = 3
2 sin x (sin x /cos x) = 3
2 sin^2 x = 3 cos x
2(1- cos^2 x) = 3 cos x
2 cos^2 x + 3 cos x - 2 = 0
(2 cos x - 1)(cos x + 2) = 0

cos x = 1/2

x = 60, 300

P1...mock...

oh the joy....not got p1 mock (dont laugh) for a while but done a couple of past papers and....if i dont get 100% will be pretty miffed.

Reply 6

john !!

My problem is once ive finished I really have to force myself to check back cos once im done my brain thinks ok now lets go home and watch tv. but I still have 30 mins left so I have to check, argh so boring I hate the mental repetition and I cant stand it :frown:

Reply 7

lgs98jonee

mik1a

i know tne feeling...u have to force urself to look back and check answers

Reply 8

Barny

I got a U in my first P1 mock, I got 83% in the actual exam though. Mocks mean absolutely nothing.

Reply 9

lgs98jonee

imasillynarb

I got a U in my first P1 mock, I got 83% in the actual exam though. Mocks mean absolutely nothing.

how did u get a u...did u do it deliberately?

Reply 10

IntegralAnomaly

imasillynarb

I got a U in my first P1 mock, I got 83% in the actual exam though. Mocks mean absolutely nothing.

when i first started a/s maths i was crap,i thought i never will get through this.And now maths is my strongest topic and i want to do it at uni!,just work hard and never give up and u will suceed...............indeed

Reply 11

Barny

lgs98jonee

how did u get a u...did u do it deliberately?

No, when I first started maths I was just...rubbish, Id scraped a C at GCSE and begged to be let on the course, my teacher let me do it and everyone thought I shouldnt of been allowed to do it, I was just really determined to prove everyone wrong. Now Im by far the best in the class - determination, hardwork, and I guess a little bit of talent is all you need.

Reply 12

username9816

imasillynarb

Well Done. That is a superb turn around.

Reply 13

JamesF

Im not looking forward to my maths exams. Although i understand it all, i have an incredible ability to misread questions, mistake plus' for minus' etc. Its very annoying, and costly in terms of marks :mad:

Reply 14

IntegralAnomaly

JamesF

hmmmm i used to have the same problem,i guess when ur in a hurry u make silly little mistakes like that.They way i've got around and still am tryin to get around is 1)by doin LOADS of past qu.Espiecally the 1's in the heinmaan a'levels maths review exercises 2)Read through ur answers 2-3 times and read through them at a pace were u can analyze ur work and still have time to finish

Reply 15

john !!

wohoo 97%, not quite prefect but it's a long way off the exams! :biggrin:

Reply 16

username9816

mik1a

wohoo 97%, not quite prefect but it's a long way off the exams! :biggrin:

If that is 97% raw, then that would get you 100% UMS. :smile:

Reply 17

john !!

What is UMS?

I've heard about this before, and why would it gewt me 100% UMS? :confused:

Reply 18

Daveo

mik1a

What is UMS?

I've heard about this before, and why would it gewt me 100% UMS? :confused:

You have no need to worry - your gunna rock P1.
UMS is a standardised mark across the whole country - its the method the exam boards use to f*** with your results. You can effectively end up with 100% even if you only get like 90 marks out of 100