CAPE Pure Mathematics Unit 2 · May/June 2016 · Paper 1 · Question Q29

The values of x for which the expansion of \frac{1}{\sqrt{100 - 50x}} is valid are

1. (A)-1 < x < 1
2. (B)-2 < x < 2
3. (C)-\frac{1}{2} < x < \frac{1}{2}
4. (D)x < -2 and x > 2