Q. Find the numerical value of the log expression.loga=−10logb=11logc=4loga3b3c4Answer:
Apply Quotient Rule: We are given the values of loga, logb, and logc. We need to find the value of log(a3b3c4). Using the quotient rule of logarithms, which states that log(yx)=log(x)−log(y), we can separate the logarithm of the fraction into the difference of the logarithms of the numerator and the denominator.
Apply Power Rule: Now, we apply the power rule of logarithms, which states that log(xn)=n⋅log(x), to the numerator and denominator separately.For the numerator, we have c4, so we apply the power rule to get 4⋅log(c).For the denominator, we have a3 and b3, so we apply the power rule to get 3⋅log(a) and 3⋅log(b) respectively.
Substitute Given Values: We can now substitute the given values of loga, logb, and logc into the expression.This gives us 4×log(c)−(3×log(a)+3×log(b))=4×4−(3×(−10)+3×11).
Perform Arithmetic Operations: Performing the arithmetic operations, we get 16−(−30+33)=16−3.
Calculate Final Result: Finally, we calculate the result of the subtraction, which is 16−3=13.
More problems from Quotient property of logarithms