Mathematics 9709 · AS & A Level · Integration

Integration — practice question

The definite integral $I$ is given by $I = \int_0^2 (4e^{\frac{1}{2}x} + 3) \, dx$.
(i)[3]

Show that $I = 8e - 2$.

(ii)[2]

Draw the curve $y = 4e^{\frac{1}{2}x} + 3$ for $0 \leq x \leq 2$.

(iii)[1]

State whether an estimate of $I$ found by the trapezium rule will be more than or less than $8e - 2$. Justify your response.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: Find an integral of the form $\,k_1 e^{\frac12 x}+k_2 x$

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