Determine the length of the curve y=x24−lnx2y = \frac{x^2}{4} - \frac{\ln x}{2}y=4x2−2lnx for 1≤x≤21 \le x \le 21≤x≤2.
3/4+ln23/4 + \ln 23/4+ln2
1/4+ln21/4 + \ln 21/4+ln2
1/21/21/2
1/41/41/4