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11.1 Integrating Standard Functions

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Question 67

The curve C has equation $\text{f}(x)$ where $x > 0$ .

Given that

$f′(x)=(x+2)2xx\text{f}'(x) = \dfrac{(x + 2)^2}{x\sqrt{x}}$
the point $P (9, 30)$ lies on C

(i) Find the value of the gradient of the curve at $P$ .

(ii) Hence find the equation of the tangent to $C$ at $P$ , giving your answer in the form $a x + b y + c = 0$ , where $a$ , $b$ and $c$ are integers to be found.

[4]

Find $f(x)\text{f}(x)$ , simplifying your answer.

[6]

Markscheme

11.1 Integrating Standard Functions Questions

A Level
Maths
11.1 Integrating Standard Functions

80 exam-style questions on Edexcel A Level Maths 11.1 Integrating Standard Functions. Each one has a worked solution and a mark scheme showing where the marks go.

11.1 Integrating Standard Functions

Question bank

11.1 Integrating Standard Functions

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Question 67

The curve C has equation $\text{f}(x)$ where $x > 0$ .

Given that

$f′(x)=(x+2)2xx\text{f}'(x) = \dfrac{(x + 2)^2}{x\sqrt{x}}$
the point $P (9, 30)$ lies on C

(i) Find the value of the gradient of the curve at $P$ .

(ii) Hence find the equation of the tangent to $C$ at $P$ , giving your answer in the form $a x + b y + c = 0$ , where $a$ , $b$ and $c$ are integers to be found.

[4]

Find $f(x)\text{f}(x)$ , simplifying your answer.

[6]

Markscheme

11.1 Integrating Standard Functions Questions

A Level
Maths
11.1 Integrating Standard Functions

80 exam-style questions on Edexcel A Level Maths 11.1 Integrating Standard Functions. Each one has a worked solution and a mark scheme showing where the marks go.