COR. 02

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\begin{align*} a &=\ln(16) = \ln\left(2^4\right) = 4\ln(2);&\\ b &= \ln(6) = \ln(2\times 3) = \ln(2) +\ln(3);&\\ c &= \ln(4\mathrm e) = \ln(4)+\ln(\mathrm e) = \ln(2^2) + 1 = 2\ln(2)+1;&\\ d &= \ln(36) = \ln(4\times 9) = \ln(2^2\times 3^2) = 2\ln(2)+2\ln(3).& \end{align*}

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code : 2724