4.2 Expanding (a + bx)^n

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Question 5

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

\left( 27 + \frac{4d}{5} \right)^{-\frac{2}{3}}

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

[3]

4.2 Expanding (a + bx)^n

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

Question 5

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

\left( 27 + \frac{4d}{5} \right)^{-\frac{2}{3}}

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

[3]

4.2 Expanding (a + bx)^n

Question 5

Markscheme

4.2 Expanding (a + bx)^n

Question 5

Markscheme

4.2 Expanding (a + bx)^n

Question 5

4.2 Expanding (a + bx)^n Questions

4.2 Expanding (a + bx)^n

Question 5

4.2 Expanding (a + bx)^n Questions