Empty sym: 0-by-1 Log function

The result of:

syms s

expr = (2*log10(1000*s))-(log10(s^2));

solve(expr)

shoul be 6.

Why do I get the result: Empty sym: 0-by-1?

What is the correct sytax?

Thank you

Answer 1

[Ameer Hamza]

Your equation is

which shows that your equation has no solution.