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A proof moves from given assumptions, through justified [ ], to a conclusion.
A
A general odd integer can be represented as 2k+1\boxed{2k+1}2k+1, where kkk is an integer.
B
A proof moves from given assumptions, through justified logical deductions, to a conclusion.
C
The product law of logarithms is loga(xy)=logax+logay\boxed{\log_a(xy)=\log_a x+\log_a y}loga(xy)=logax+logay.
D
They provide evidence only, not proof for every permitted value.
Card 1 of 23
1.1.1 Proof Flashcards
23 flashcards on WJEC A Level Maths 1.1.1 Proof: the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4.