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18 votes
18 votes
hello i just wanted to check my answer in this test in math :]] i'm not sure if i did everything correctly

hello i just wanted to check my answer in this test in math :]] i'm not sure if i-example-1
User Matthiku
by
2.8k points

1 Answer

7 votes
7 votes

\log _3(\frac{3^{(2)/(3)}}{2^{(1)/(3)}})+\log _(27)(6)\approx1

1) Let's simplify this logarithm expression, making use of properties.


(2)/(3)\log _36-(1)/(3)\log _38+\log _(27)6

2) Let's rewrite that expression turning the factor 2/3 back into an exponent

as well as that -1/3:


\begin{gathered} \log _3\mleft(6^{(2)/(3)}\mright)-\log _3\mleft(8^{(1)/(3)}\mright)+\log _(27)\mleft(6\mright) \\ \end{gathered}

Now, let's rewrite that difference into a quotient:


\begin{gathered} \log _3\mleft(\frac{3^{(2)/(3)}}{2^{(1)/(3)}}\mright)+\log _(27)\mleft(6\mright) \\ 0.4563+0.5436\approx1 \end{gathered}

Since the question does not allow the use of calculator, then we can leave it as the simplest possible expression. Although, the answer is approximately 1.

User Charles Salvia
by
3.2k points
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