Q. Find the numerical value of the log expression.loga=12logb=12logc=−6logb9c5a2Answer:
Apply Power Rule: Using the given values for loga, logb, and logc, we need to apply the properties of logarithms to find the value of log(b9c5a2). First, we apply the power rule of logarithms, which states that log(an)=n⋅log(a), to each term inside the logarithm.
Rewrite Expression: We rewrite the expression using the power rule:\log\left(\frac{a^{2}}{b^{9}c^{5}}\right) = \log(a^{2}) - \log(b^{9}) - \log(c^{5})\(\newline= 2 \cdot \log(a) - 9 \cdot \log(b) - 5 \cdot \log(c)\)
Substitute Given Values: Now we substitute the given values of loga, logb, and logc into the expression:= 2×12−9×12−5×(−6)
Perform Arithmetic Operations: We perform the arithmetic operations:=24−108+30
Find Value of Expression: Finally, we add and subtract the numbers to find the value of the expression:=−84+30=−54
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