Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Solve for in the equation (assume ).
A
B
C
D
Verified step by step guidance
1
Start with the given equation: \$2 \ln x = 4 \ln 2$.
Use the property of logarithms that allows you to move coefficients in front of the logarithm as exponents: rewrite the equation as \(\ln x^2 = \ln 2^4\).
Since the natural logarithm function \(\ln\) is one-to-one, set the arguments equal to each other: \(x^2 = 2^4\).
Simplify the right side: \$2^4 = 16\(, so the equation becomes \)x^2 = 16$.
Solve for \(x\) by taking the square root of both sides, remembering the domain restriction \(x > 0\), so \(x = \sqrt{16}\).