Hello, This is not exactly a calculus question but linked to it if logs are involved. I have 2 equations log a = log b^2 (both to the base 10) log(2a-b) = 1 (also based 10) An easy question. However, I wanted to understand if i should ignore b = -2 and a = 4 as an answer. Log(2a-b) is positive…

Thanks for asking – great that you’re working to make sense of this! Agreed that b = -2 and a = 4 is a valid answer to the question as stated, for the reasons you wrote. Not sure why your book doesn’t include that, but sometimes in the overall instructions for the section’s problems the writer st…

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Logarithms - 2 solutions - both valid?

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