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3.1.1 Proof (A-level only)

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Question 59

A network routing protocol generates a priority index $S$ for a data stream of size $\in \mathbb{N}$ based on the formula

S = k^2 + 12k + 13

Use the method of proof by contradiction to show that if the priority index $S$ is even, then the data stream size $k$ must be odd.

[4]

Markscheme

3.1.1 Proof (A-level only) Questions

A Level
Maths
3.1.1 Proof (A-level only)

107 exam-style questions on WJEC A Level Maths 3.1.1 Proof (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

3.1.1 Proof (A-level only)

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3.1.1 Proof (A-level only)

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Question 59

A network routing protocol generates a priority index $S$ for a data stream of size $\in \mathbb{N}$ based on the formula

S = k^2 + 12k + 13

Use the method of proof by contradiction to show that if the priority index $S$ is even, then the data stream size $k$ must be odd.

[4]

Markscheme

3.1.1 Proof (A-level only) Questions

A Level
Maths
3.1.1 Proof (A-level only)

107 exam-style questions on WJEC A Level Maths 3.1.1 Proof (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.