Question:
Mark $(\sqrt{)}$ against the correct answer in each of the following:
$\int \log _{10} \mathrm{xdx}=?$
A. $\frac{1}{\mathrm{x}} \log _{\mathrm{e}} 10+\mathrm{C}$
B. $\frac{1}{\mathrm{x}} \log _{10} \mathrm{e}+\mathrm{C}$
C. $x(\log x-1) \log _{e} 10+C$
D. $x(\log x-1) \log _{10} e+C$
Solution:
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