# FP: expansion

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Thread starter 2 years ago
#1
Is part b maclaurins or taylors series and how do I differentiate? I stupidly threw away my notes when I saw both were in the formula book.
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2 years ago
#2
(Original post by Maths&physics)
I spart b maclaurins ot taylors series and how do I differentiate? I stupidly threw away my notes when I saw both were in the formula book.
The expansion is about so you need to use Maclaurin series.

Use your answers to part (a) to help you with that. Have you done it?
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Thread starter 2 years ago
#3
(Original post by RDKGames)
The expansion is about so you need to use Maclaurin series.

Use your answers to part (a) to help you with that. Have you done it?
thank you
0
2 years ago
#4
(Original post by Maths&physics)
thank you
No problem.

If you come to a blank where you don't know whether to use Maclaurin or Taylor, ALWAYS choose Taylor.

This is because Taylor expansion is general to any point along the curve whereas Maclaurin expansion is only for (i.e. Maclaurin is basically Taylor but for x=0). So if you roll with Taylor, you will end up with Maclaurin anyway if your point is and so you would still get the right answer.

If you use Maclaurin for a point then you will get the wrong answer.
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Thread starter 2 years ago
#5
(Original post by RDKGames)
No problem.

If you come to a blank where you don't know whether to use Maclaurin or Taylor, ALWAYS choose Taylor.

This is because Taylor expansion is general to any point along the curve whereas Maclaurin expansion is only for (i.e. Maclaurin is basically Taylor but for x=0). So if you roll with Taylor, you will end up with Maclaurin anyway if your point is and so you would still get the right answer.

If you use Maclaurin for a point then you will get the wrong answer.
fantastic. thank you
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