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Beyond Horizon Set 2 Paper 2 · Q9

Paper 2Logic & proofPowers & logarithms

Let y=log⁡axy=\log_a x and a>1a>1. Then only one of the following statements is false. Which one is it?

AIf x=1x=1, then y=0y=0
BIf x<1x<1, then y<0y<0
CIf x=12x=\frac12, then y=12y=\frac12
DIf x=ax=a, then y=1y=1

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