fp2 second order differentials question Watch

Mutleybm1996
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#1
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Hi all,
Today in class we did a question which was to use x=e^u to solve a second order differential in terms of x and y. It was pretty tricky! Will this sort of question come up in an exam? For EDEXCEL


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Phichi
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#2
(Original post by Mutleybm1996)
Hi all,
Today in class we did a question which was to use x=e^u to solve a second order differential in terms of x and y. It was pretty tricky! Will this sort of question come up in an exam? For EDEXCEL


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Yes
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Mutleybm1996
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(Original post by Phichi)
Yes
Really? My teacher said no..... *confused*


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davros
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(Original post by Mutleybm1996)
Hi all,
Today in class we did a question which was to use x=e^u to solve a second order differential in terms of x and y. It was pretty tricky! Will this sort of question come up in an exam? For EDEXCEL


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I don't know the exact content of FP2 (since I'm "premodular" ), but this sort of substitution is a fairly standard technique for transforming DEs, so it's worthwhile spending some time trying to get to grips with it.

They can't set questions requiring a ridiculous amount of algebra because that would take too much time, but something like x = e^u is pretty standard IMHO.
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Goods
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(Original post by Mutleybm1996)
Hi all,
Today in class we did a question which was to use x=e^u to solve a second order differential in terms of x and y. It was pretty tricky! Will this sort of question come up in an exam? For EDEXCEL


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If it came up you would be given the substitution.
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TeeEm
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(Original post by Mutleybm1996)
Really? My teacher said no..... *confused*


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This type of question last came up on EDEXCEL, June 2014, IAL FP2.
The FP2 syllabus is identical for home students and IAL
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