3.3.7 Sequences and series (A-level only)

Question 2

a.

Find the first three terms of the expansion of $(9+2x)−12\displaystyle (9 + 2x)^{-\frac{1}{2}}$ in ascending powers of $x$ , giving each coefficient in its simplest form.

[4]

b.

The expansion of

$a+bx9+2x\displaystyle \frac{a + bx}{\sqrt{9 + 2x}}$

in ascending powers of $x\,$ begins $\dots$

Find the value of $a\,$ and the value of $b$ .

[3]

3.3.7 Sequences and series (A-level only)

1 2 3 4 5 6 7 8

Question 2

a.

Find the first three terms of the expansion of $(9+2x)−12\displaystyle (9 + 2x)^{-\frac{1}{2}}$ in ascending powers of $x$ , giving each coefficient in its simplest form.

[4]

b.

The expansion of

$a+bx9+2x\displaystyle \frac{a + bx}{\sqrt{9 + 2x}}$

in ascending powers of $x\,$ begins $\dots$

Find the value of $a\,$ and the value of $b$ .

[3]

3.3.7 Sequences and series (A-level only)

Question 2

Markscheme

3.3.7 Sequences and series (A-level only)

Question 2

Markscheme

3.3.7 Sequences and series (A-level only)

Question 2

3.3.7 Sequences and series (A-level only) Questions

3.3.7 Sequences and series (A-level only)

Question 2

3.3.7 Sequences and series (A-level only) Questions