a) Write down the first three terms, in ascending powers of x, in the expansion of (1 ax) n where a 0 and n 2 b) The coefficient of the x term is half the coefficient of the term in x Show that n 1 a a c) Find the coefficient of the x term when a 1 5 ...

a The first three terms of the expansion of 1 axn in ascending ...

a) Write down the first three terms, in ascending powers of x, in the expansion of (1

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a) Write down the first three terms, in ascending powers of x, in the expansion of (1 + ax)ⁿ where a ≠ 0 and n > 2.

b) The coefficient of the x² term is half the
coefficient of the term in x.
Show that n =
1 + a/a.

c) Find the coefficient of the x² term when a = 1/5.

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Complete Pure Mathematics 1 For Cambridge International AS & A Level

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Authors: Jean Linsky, Brian Western, James Nicholson

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Question Posted: Apr 13, 2023 10:58 AM

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a) Write down the first three terms, in ascending powers of x, in the expansion of (1

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Complete Pure Mathematics 1 For Cambridge International AS & A Level

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