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We define the logarithm of a positive number $a$ in this way:

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\$\\log_ba=c \\Longleftrightarrow a=b^c \\space \\text{where b>0 is the base number.}\$

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Rearrange some expressions involving logarithms by applying the relation $\\log_b(a) = c \\iff a = b^c$.

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Calculate $x$.

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$\\log_\\var{f}(x)=\\var{f1}$

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$x=$ [[0]]

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$\\log_a(a^x)$

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$a^{\\log_a(x)}$

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$e^{\\ln(x)}$

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$\\log_{10}(x)$

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$\\log_e(x)$

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$\\ln(e^x)$

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Which of these is equivalent to x? (There may be more than one correct answer)
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