Question

The value of 'a' for which the equation

ln (a lnx) = lnx has solution is-

• A. $\frac{1}{e}$
• B. $\frac{1}{e^{2}}$
• C. e
• D. None of these

Answer 1

Answer: (C)

e

Answer 2

Q a lnx = x ̃ lnx =$\frac{x}{a}$

The line y = $\frac{x}{a}$ becomes tangent to

curve y = lnx at x = e for a = e