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log-3-12-a-log-3-18-




Question Number 197253 by sciencestudentW last updated on 11/Sep/23
log_3 12=a  log _3 18=?
$$\mathrm{lo}\underset{\mathrm{3}} {\mathrm{g}12}={a} \\ $$$$\mathrm{log}\underset{\mathrm{3}} {\:}\mathrm{18}=?\: \\ $$
Answered by AST last updated on 11/Sep/23
((log3+2log2)/(log3))=a⇒2log2=(a−1)log3  ((log2+2log3)/(log3))=((log2)/(log3))+2=((a−1)/2)+2=((a+3)/2)
$$\frac{{log}\mathrm{3}+\mathrm{2}{log}\mathrm{2}}{{log}\mathrm{3}}={a}\Rightarrow\mathrm{2}{log}\mathrm{2}=\left({a}−\mathrm{1}\right){log}\mathrm{3} \\ $$$$\frac{{log}\mathrm{2}+\mathrm{2}{log}\mathrm{3}}{{log}\mathrm{3}}=\frac{{log}\mathrm{2}}{{log}\mathrm{3}}+\mathrm{2}=\frac{{a}−\mathrm{1}}{\mathrm{2}}+\mathrm{2}=\frac{{a}+\mathrm{3}}{\mathrm{2}} \\ $$

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