Solve the Logarithm Equation: x∙log_m(1/3^x)

Question

xlogm13x= x\log_m\frac{1}{3^x}=

Video Solution

Solution Steps

00:00 Solve
00:04 We will use the formula to convert a fraction to a negative exponent
00:09 We will use this formula in our exercise
00:19 We will use the formula for the logarithm of a power
00:24 We will use this formula in our exercise
00:36 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we will apply the rules of logarithms as follows:

  • Firstly, rewrite the expression logm13x \log_m \frac{1}{3^x} using the Quotient Rule:
  • logm13x=logm1logm3x \log_m \frac{1}{3^x} = \log_m 1 - \log_m 3^x

  • Since logm1=0 \log_m 1 = 0 , the expression simplifies to:
  • 0logm3x=logm3x 0 - \log_m 3^x = -\log_m 3^x

  • Apply the Power Rule to simplify logm3x-\log_m 3^x:
  • logm3x=xlogm3 -\log_m 3^x = -x \log_m 3

  • Substitute back to the original expression xlogm13x x \log_m \frac{1}{3^x} :
  • x(xlogm3)=x2logm3 x ( -x \log_m 3) = -x^2 \log_m 3

Therefore, the solution to the problem in terms of simplifying the expression is x2logm3 -x^2 \log_m 3 .

Answer

x2logm3 -x^2\log_m3