det of {{x^4,(sin(x))^2,log(x)},{4x^3,sin(2x),1/x},{12x^2,2cos(2x),-1/x^2}}

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.