# FP3 Polar Curves

Watch
Announcements
Thread starter 3 years ago
#1
A couple harder polar curves questions. I didn't make any useful progress

Can anyone do questions 7 and 8? 7 b ii onwards
1
3 years ago
#2
(Original post by Lucasium)
A couple harder polar curves questions. I didn't make any useful progress

Can anyone do questions 7 and 8?
Any specific parts you're stuck on?
1
3 years ago
#3
the first part of q7 is easier if you reflect the curve in the line y = x ... then it is just a simple integral wrt x. the limits are not hard to find.
1
Thread starter 3 years ago
#4
(Original post by Zacken)
Any specific parts you're stuck on?
All apart from 7 a and 7bi
0
3 years ago
#5
(Original post by Lucasium)
All apart from 7 a and 7bi
7(b) (ii) is simple a matter of recognising that and so your equation becomes after which, some re-arranging and simplifying and solving for in terms of gets you where you need to be.
0
Thread starter 3 years ago
#6
(Original post by Zacken)
7(b) (ii) is simple a matter of recognising that and so your equation becomes after which, some re-arranging and simplifying and solving for in terms of gets you where you need to be.
I tried but only got this far
0
3 years ago
#7
(Original post by Lucasium)
A couple harder polar curves questions. I didn't make any useful progress

Can anyone do questions 7 and 8?
1=cos(0) from here you can use the (half?) angle formulas that are included in C3 but were most likely not taught in detail.
1
3 years ago
#8
(Original post by Lucasium)
I tried but only got this far
Bit unwieldy?

From which it suffices to see that must be positive so you take
1
Thread starter 3 years ago
#9
(Original post by Olipoo)
1=cos(0) from here you can use the (half?) angle formulas that are included in C3 but were most likely not taught in detail.
For which question?
0
3 years ago
#10
(Original post by Lucasium)
For which question?
Given that you've repped my post, I take it you've understood - in which case, can you then see how the integral is a multiple of which is the area of something you've already found so adjusting for the multiple gets you the required answer.
0
3 years ago
#11
(Original post by Lucasium)
For which question?
7c
0
Thread starter 3 years ago
#12
Good work guys, I appreciate it. Let's move on to question 8
0
3 years ago
#13
(Original post by Lucasium)
Good work guys, I appreciate it. Let's move on to question 8
Same thing, write re-arrange, blah blah.
0
Thread starter 3 years ago
#14
(Original post by Zacken)
Same thing, write re-arrange, blah blah.
These questions are harder than usual aren't they? I haven't had such an issue before
0
3 years ago
#15
(Original post by Lucasium)
These questions are harder than usual aren't they? I haven't had such an issue before
I wouldn't know - I'm not on your exam board, so I'll defer to your judgement.
0
Thread starter 3 years ago
#16
(Original post by Zacken)
I wouldn't know - I'm not on your exam board, so I'll defer to your judgement.
I've just received news that the booklet is a mix of aqa and MEI, so concern over. It's no excuse but it makes me feel a little better
0
3 years ago
#17
(Original post by Lucasium)
I've just received news that the booklet is a mix of aqa and MEI, so concern over. It's no excuse but it makes me feel a little better
Could you link this booklet?
1
Thread starter 3 years ago
#18
(Original post by Argylesocksrox)
Could you link this booklet?
I suppose I'll take and upload pictures tomorrow, it's a big booklet
0
3 years ago
#19
(Original post by Lucasium)
I suppose I'll take and upload pictures tomorrow, it's a big booklet
Thanks mate
0
X

new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### Poll

Join the discussion

#### What factors affect your mental health the most right now? (select all that apply)

Lack of purpose or routine (59)
15.17%
Uncertainty around my education (68)
17.48%
Uncertainty around my future career prospects (39)
10.03%
Isolating with family (24)
6.17%
Lack of support system (eg. Teachers, counsellors) (15)
3.86%
Lack of exercise/ability to be outside (29)
7.46%
Loneliness (36)
9.25%
Financial worries (13)
3.34%
Concern about myself or my loved ones getting ill (39)
10.03%
Exposure to negative news/social media (28)
7.2%
Lack of real life entertainment (eg. cinema, gigs, restaurants) (39)
10.03%