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# Edexcel P6 Maclaurin Q watch

1. Heinemann Edexcel P6. Ex 1A Q 15

First 3 non-zero terms in the expansion of e(x²-x)

Book has

1 + x - (1.5).x² ...

I have

1 - x + (1.5).x² ...

Aitch
2. (Original post by Aitch)
Heinemann Edexcel P6. Ex 1A Q 15

First 3 non-zero terms in the expansion of e(x²-x)

Book has

1 + x - (1.5).x² ...

I have

1 - x + (1.5).x² ...

Aitch
I get what you get, The book seems wrong
You can check, this by substituting values in e(x²-x) and substitute values in your expansion and in the books expansion, compare all the values, you'll find that your expansion is right.
3. (Original post by Vijay1)
I get what you get, The book seems wrong
You can check, this by substituting values in e(x²-x) and substitute values in your expansion and in the books expansion, compare all the values, you'll find that your expansion is right.
I've tried some small values for x, and what I've got does give closer results.

Aitch

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