Higher June 2019 Paper 4 Q17
17 Show that \(\left(a^3\right)^{-\frac{1}{3}} \times \left(a^2\right)^{\frac{1}{2}} = 1\). [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(\left[\left(a^3\right)^{-\frac{1}{3}} =\right]\) \(a^{-1}\) or \(\dfrac{1}{a}\) | 1 | condone \(x\) etc instead of \(a\) but not numbers only | |
| \(\left[\left(a^2\right)^{\frac{1}{2}} =\right]\) \(a^{[1]}\) or \(\dfrac{a^{[1]}}{1}\) | 1 | ||
| \(\dfrac{1}{a} \times a\) or \(a^0\) or \(\dfrac{a}{a}\) [= 1] | 1dep | dep on both previous marks | |