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1.2 Algebra and Functions

1.2 Algebra and Functions

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Question 89
a.

Prove that the following statement is not true.

m m\,m is an odd number greater than 1 ⇒m2+4\Rightarrow m^2 + 4⇒m2+4 is prime.

[2]
b.

By considering separately the case when n n\,n is odd and the case when n n\,n is even, prove that the following statement is true.

n n\,n is a positive integer ⇒n2+1\Rightarrow n^2 + 1⇒n2+1 is not a multiple of 4.

[4]
Markscheme

1.2 Algebra and Functions Questions

  1. A Level
  2. /Maths
  3. /1.2 Algebra and Functions

302 exam-style questions on WJEC A Level Maths 1.2 Algebra and Functions, covering 1.2.1 Algebra and Functions, 1.2.2 Algebra and Functions, 1.2.3 Algebra and Functions, 1.2.4 Algebra and Functions, 1.2.5 Algebra and Functions, 1.2.6 Algebra and Functions, 1.2.7 Algebra and Functions, 1.2.8 Algebra and Functions, 1.2.9 Algebra and Functions, 1.2.10 Algebra and Functions, 1.2.11 Algebra and Functions, and 1.2.12 Algebra and Functions. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank