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# Super difficult FP2 question. Everyone can try

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1. This is question 4 from paper P6 June 2004. I cannot solve part a) . And for some reason, the mark scheme didnt explain the hardest part.
That would be great if someone can solve it and explain for me.
Thanks
2. (Original post by Xuancong)
This is question 4 from paper P6 June 2004. I cannot solve part a) . And for some reason, the mark scheme didnt explain the hardest part.
That would be great if someone can solve it and explain for me.
Thanks
1. Post the actual question via picture or link.

2. Please show some of your own thoughts and attempts at this question, we will attempt to guide you, we're not going to provide a solution for you.

Thanks.
3. (Original post by Xuancong)
This is question 4 from paper P6 June 2004. I cannot solve part a) . And for some reason, the mark scheme didnt explain the hardest part.
That would be great if someone can solve it and explain for me.
Thanks
4. (Original post by Zacken)
1. Post the actual question via picture or link.

2. Please show some of your own thoughts and attempts at this question, we will attempt to guide you, we're not going to provide a solution for you.

Thanks.
Don't think we will see this amazingly difficult question.
5. (Original post by Xuancong)
This is question 4 from paper P6 June 2004. I cannot solve part a) . And for some reason, the mark scheme didnt explain the hardest part.
That would be great if someone can solve it and explain for me.
Thanks

(Original post by STEMisSuperior.)
If that's the question then it looks like a perfectly straightforward 2nd order linear DE question.

The only complication in these problems arises if the RHS is some linear combination of the complementary function, but it doesn't look like the case here, so I can't see where there would be a problem.]

Without working the thing through, I'm guessing that the CF has an exponential factor which goes to zero for large x, so the dominant behaviour will be that of the particular integral.

Really need to see some working from the OP to see where the 'difficulty' lies!
6. (Original post by davros)
If that's the question then it looks like a perfectly straightforward 2nd order linear DE question.

The only complication in these problems arises if the RHS is some linear combination of the complementary function, but it doesn't look like the case here, so I can't see where there would be a problem.]

Without working the thing through, I'm guessing that the CF has an exponential factor which goes to zero for large x, so the dominant behaviour will be that of the particular integral.

Really need to see some working from the OP to see where the 'difficulty' lies!
You were right. In fact i solved it 5 mins after i post this thread. But thank you by the way
7. (Original post by Zacken)
1. Post the actual question via picture or link.

2. Please show some of your own thoughts and attempts at this question, we will attempt to guide you, we're not going to provide a solution for you.

Thanks.
The hard part was prove it is true for k+1.
8. (Original post by Xuancong)
The hard part was prove it is true for k+1.
Not sure what you mean?

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