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4.2 Expanding (a + bx)^n

4.2 Expanding (a + bx)^n

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Question 73

An ecological model for the expansion of a species population defines the growth intensity, I(k)I(k)I(k), after kkk observation cycles. The value of I(k)I(k)I(k) is given by the coefficient of tkt^ktk in the binomial expansion of:

A(t)=(32+2t)11 A(t) = \left(\frac{3}{2} + 2t\right)^{11} A(t)=(23​+2t)11

Calculate the value of the growth intensity after 7 observation cycles, I(7)I(7)I(7), giving your answer in simplest form.

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4.2 Expanding (a + bx)^n Questions

  1. A Level
  2. /Maths
  3. /4.2 Expanding (a + bx)^n

99 exam-style questions on Edexcel A Level Maths 4.2 Expanding (a + bx)^n. Each one has a worked solution and a mark scheme showing where the marks go.

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