(main)[5]
Determine the value of $a$ and the value of $b$.
Mathematics 0580 · IGCSE · Sequences
Sequences — practice question
The $n$th term in a sequence is given by $an^2 + bn - 4$.
Its first term is $-3$ and its second term is $2$.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Write down two equations, for example $a(1)^2+b(1)-4=-3$, $a(2)^2+b(2)-4=2$” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI