Yep.
This is Q4:
I'll start Q5 now
***** EDIT *****
In the last row of formulae I accidentally wrote 8n, I meant to write 7n
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Further Mathematics: Post your doubts here!
- Thread starter abcde
- Start date
This is Q4:
I'll start Q5 now
***** EDIT *****
In the last row of formulae I accidentally wrote 8n, I meant to write 7n
Q5
Remember to learn the more important polar graphs. It saves you a lot of trouble
Attachments
what if u get a - value?
Treat it as if it were the angle being negative, not the 'r' value
http://maxpapers.com/wp-content/uploads/2012/11/9231_Oct-Nov-2010-All-Question-Papers.pdf
P12 Q7.
Can you do the last 2 parts?
P12 Q7.
Can you do the last 2 parts?
I think you should try it yourself, see what happens!
I also can't be bothered hahahah
I drew it but im not sure about the shape.
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Can someone show me the steps for 2011 N P13 Q2. Help is appreciated. Thanks in advance!
Give me 30 mins I gotta do a couple things and then I'll get to it
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It's ok. I got it already.
I do need help with 2012 N P13 tho.
Q12 OR, I'm not sure how to show the last part.
Alright, it's solved, let me send you the full solutionIt's ok. I got it already.
I do need help with 2012 N P13 tho.
Q12 OR, I'm not sure how to show the last part.
It's ok. I got it already.
I do need help with 2012 N P13 tho.
Q12 OR, I'm not sure how to show the last part.
Attachments
- Messages
- 72
- Reaction score
- 49
- Points
- 28
Need help with 9231/11/MJ/14 Q7 second part "Deduce...". THANKSS.
Product of roots of a quartic equation.
Then explain that the positive root is taken as both tan pi/5 and tan2pi/5 are positive.
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Are you talking about the part to deduce the roots of equation are.... ?
I know how to solve the last part 'Hence show that...' But not the 'deduce...'
I'm sorry I still don't get it. Could you explain further?
Basically equate tan 5theta to 0, and reject any values than gives tan theta = 0 (0) as it is not the solution of the eqn intended.
Then find theta that with limits of (-pi, pi)
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- Reaction score
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Oh I get it now! Wasn't that complicated after all.
If you're free could you please help with more?
9231/11/ON/13
Q3. Express Ur in terms of r. I know how to express it but I don't know how to show it step by step or how to explain what I did to arrive at that answer. And how to justify it. I've read the marking scheme but still don't get it.
Q6. 'hence show that every solution of... has the form...' I don't understand the concept/theory here. Could you perhaps explain it briefly?
Sorry for asking so many questions. Thanks in advance!