Q. Find the numerical value of the log expression.loga=−8logb=9logc=−3logc8a9b9Answer:
Apply Logarithm Power Rule: Apply the logarithm power rule to the expression.The power rule of logarithms states that log(an)=n×log(a). Let's apply this rule to each term in the expression.log(a9)=9×log(a)log(b9)=9×log(b)log(c8)=8×log(c)
Substitute Given Log Values: Substitute the given logarithm values into the expression.We have been given loga=−8, logb=9, and logc=−3. Let's substitute these values into the expression from Step 1.log(a9)=9×(−8)log(b9)=9×9log(c8)=8×(−3)
Calculate Values: Calculate the values from Step 2.Now we calculate the numerical values for each term.log(a9)=9×(−8)=−72log(b9)=9×9=81log(c8)=8×(−3)=−24
Apply Logarithm Quotient Rule: Apply the logarithm quotient rule to the original expression.The quotient rule of logarithms states that log(ba)=log(a)−log(b). Let's apply this rule to the original expression.log(c8a9b9)=log(a9)+log(b9)−log(c8)
Substitute Calculated Values: Substitute the calculated values from Step 3 into the expression from Step 4.Now we substitute the values we found into the expression.log(c8a9b9)=(−72)+81−(−24)
Calculate Final Value: Calculate the final numerical value.Now we perform the arithmetic to find the numerical value.log(c8a9b9)=(−72)+81+24log(c8a9b9)=9+24log(c8a9b9)=33
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