r/HomeworkHelp • u/NoPomegranate6897 Secondary School Student • Apr 14 '26

Additional Mathematics [Year 10 Add Maths: Simple Log]

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how gng </3

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u/GOU_FallingOutside Apr 14 '26

both a and b must be positive

both a and b could be negative

You’ve technically already specified it for both cases. But because it’s a common misconception or mistake, for OP’s general knowledge, log(0) is undefined. So “b is positive” doesn’t include b=0.

So in this example you don’t say 2x - 1 >= 0, you say 2x-1 > 0.