Mathematics 9709 · AS & A Level · Differentiation

Differentiation — practice question

The curve is defined by $y = \frac{1 + x}{1 + 2x}$, with $x > -\frac{1}{2}$.

(main)[3]

Demonstrate that the gradient of the curve is always negative.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Apply the correct quotient or product rule” …