More calculator problems!

[geoff_821]

The length of braid, used to adorn the German costumes, has as continuous probability distribution, X, given by:
f (x ) 4/3 (3x^3 - 2x - 1) 0 < x < 1
0 elsewhere

Find the median length of the braid (to two decimal places).

So I put this into my calculator:
Solve( Integral (m,0) (4/3 (3x^3 - 2x - 1)) dx = 0.5,m)
but it wont give me an answer for m.
it gives me m(m^3-4m+4)=3/2

WHY!

[geoff_821]

don't worry, it works now :S I dunno, my calculator has mood swings.