Higher June 2022 Paper 1 Q19
19 The first three terms of a sequence are \(\qquad x \qquad y \qquad xy\)
The sequence is continued by multiplying the previous two terms.
(a) Circle the 5th term of the sequence. [1 mark]
- \(x^3y^3\)
- \(x^5y^5\)
- \(x^3y^4\)
- \(x^2y^3\)
(b) The 8th term of the sequence is \(\quad x^8y^{13}\)
The value of this term is negative.
What does this mean about the values of \(x\) and \(y\) ?
Tick one box for each row. [2 marks]
| Must be positive | Must be negative | Could be either | |
|---|---|---|---|
| \(x\) | |||
| \(y\) |
| Answer | Mark | Comments |
|---|---|---|
| \(x^2y^3\) | B1 |
| Answer | Mark | Comments |
|---|---|---|
| Could be either in top row | B1 | |
| Must be negative in bottom row | B1 |