4.2 Expanding (a + bx)^n
47
0/3

The luminous intensity L L\,L of a specific lamp is measured as a function of the distance d d\,d from the filament. Under certain conditions, the intensity is modeled by

L(d)=(27+4d5)−23L(d) = \left( 27 + \frac{4d}{5} \right)^{-\frac{2}{3}}L(d)=(27+54d​)−32​

Determine the range of values of d d\,d for which the binomial expansion of L(d)L(d)L(d) in ascending powers of d d\,d is valid.

[3]

4.2 Expanding (a + bx)^n Questions

Practise Edexcel A Level Maths 4.2 Expanding (a + bx)^n with exam-style questions for A Level Maths. 99 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

PreviousNext

4.2 Expanding (a + bx)^n Questions

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