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# Edexcel FP2 Official 2016 Exam Thread - 8th June 2016 watch

1. Are you allowed to do multiple attempts at a question and if one of them is correct get full marks? Of course only if the number of possible answers is infinite.
Hate proof by induction
It's funny because a lot of people say that but if you're doing STEP then it's one of the most valuable tools for proof. I guess it's just getting used to how the exam board want it set out.
3. (Original post by Nikhilm)
You can't do that for a dy/dx expansion though right?
Why not?
Spoiler:
Show
Expansion of

Let

4. (Original post by edothero)
Why not?
Spoiler:
Show
Expansion of

Let

No, i mean when the question is given in as a differential equation, not in terms of y and x but with dy/dx. There's no way of checking this without actually have to convert it back to y?
5. (Original post by Nikhilm)
No, i mean when the question is given in as a differential equation, not in terms of y and x but with dy/dx. There's no way of checking this without actually have to convert it back to y?
I don't understand, happen to have an actual question like this?
6. Attachment 543177543179
For 11b how is it done? I could see a pattern but then I could only see of making x=0 not 2 and then wasn't sure what to do with the r
Attached Images

7. When doing the inequality questions how do you know whether a particular algebraic fraction is negative? Its confusing me.
8. (Original post by Rkai01)
Attachment 543177543179
For 11b how is it done? I could see a pattern but then I could only see of making x=0 not 2 and then wasn't sure what to do with the r
ln2?
9. (Original post by Rkai01)
Attachment 543177543179
For 11b how is it done? I could see a pattern but then I could only see of making x=0 not 2 and then wasn't sure what to do with the r
Here's how I did it
10. (Original post by edothero)
I don't understand, happen to have an actual question like this?
I mean for when its solving a taylor differential equation
11. (Original post by A Slice of Pi)
Yes
What final 2 terms did you end up with for the method of differences?
12. (Original post by target21859)
Here's how I did it
Ah yeaa I was getting there but that is correct ln2 thanks a lot.
13. (Original post by Rkai01)
What final 2 terms did you end up with for the method of differences?
Is this for the question I made or the one Zacken made? One of them is in the solution I gave in a spoiler earlier. They should all vanish apart from the first and last if I remember rightly...
14. (Original post by target21859)
Here's how I did it
Would you happen to know how to go about 11b. I feel dumb because it's a hence question but I can't integrate with the sqrt and by substitution becomes awkward.
15. (Original post by A Slice of Pi)
Is this for the question I made or the one Zacken made? One of them is in the solution I gave in a spoiler earlier. They should all vanish apart from the first and last if I remember rightly...
No yours was fine it was zackens
16. (Original post by edothero)
I don't understand, happen to have an actual question like this?
Something like , now give a series solution of up to the term in .
17. Someone please explain to me how to work with polar equatiions and finding the perpedicular/parallel line when you have r squared.
18. (Original post by A Slice of Pi)
Is this for the question I made or the one Zacken made? One of them is in the solution I gave in a spoiler earlier. They should all vanish apart from the first and last if I remember rightly...
How did you get it down to the second line please?
19. (Original post by Rkai01)
Attachment 543177543179
For 11b how is it done? I could see a pattern but then I could only see of making x=0 not 2 and then wasn't sure what to do with the r
do we have to know how to do these? they seem a lot harder than any of the exam qs

can i ask how you would approach 9a?
20. (Original post by kkboyk)
When doing the inequality questions how do you know whether a particular algebraic fraction is negative? Its confusing me.
do you have an example of what you mean?

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