Back to Edexcel Maths Higher November 2018 Paper 3 Home
​Q10: Answers – Paper 3 – November 2018

Helpful Links

Content:

• Functions Introduction​
• Composite Functions – With Numbers

Quizzes:

• Function Introduction
• Composite Functions – With Numbers

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Mark Scheme

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Working
f(x) = 4 sinx°

​(a) Find f(23)
Give your answer correct to 3 significant figures.

​g(x) = 2x – 3

​b) Find fg(34)
Give your answer correct to 3 significant figures.

h(x) = (x + 4)²

 

Ivan needs to solve the following equation h(x) = 25

 

He writes

This is not fully correct.


(c) Explain why

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Question

10) f(x) = 4 sinx°

​(a) Find f(23)
Give your answer correct to 3 significant figures.

[1 mark]
​

g(x) = 2x – 3

​b) Find fg(34)
Give your answer correct to 3 significant figures.

[2 marks]
​

h(x) = (x + 4)²

 

Ivan needs to solve the following equation h(x) = 25

 

He writes

This is not fully correct.

 

(c) Explain why

[1 mark]

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