June 2024 Paper 2 Q2
2 \(5n^2 + 2 \lt 38\)
Work out all the possible integer values of \(n\). [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(-2\quad -1\quad 0\quad 1\quad 2\) with no other values | B2 | B1 \(-2\quad -1\quad 0\quad 1\quad 2\) with one other value or four of \(-2\quad -1\quad 0\quad 1\quad 2\) with no other values SC1 \(-2 \leqslant n \leqslant 2\) or \(-3 \lt n \lt 3\) or 5 with B2 response in working |
Additional guidance
| Mark the answer line eg B2 seen in working with \(-2\quad -1\quad 1\quad 2\) on answer line | B1 |
| Integers can be in any order | |
| Accept eg \(x\) for \(n\) | |
| \([-2, 2]\) is equivalent to \(-2 \leqslant n \leqslant 2\) | SC1 |
| \((-3, 3)\) is equivalent to \(-3 \lt n \lt 3\) | SC1 |
| Answer \(-2\quad -1\quad 0\quad 1\quad 2\) and \(-2 \leqslant n \leqslant 2\) | SC1 |
| Accept eg \(\pm 1\) for \(-1\) and 1 |