It can be shown that $y_1=3$ and $y_2=co{s}^2(6x)+si{n}^2(6x)$ are solutions to the differential equation $6x^{5}sin(3x)D^{2}y-3x^{2}cos(6x)Dy=0$ on $(0,\frac{}{6}).$

What does the Wronskian of $y_1,y_2$ equal on $(0,\frac{}{6})?$

$W(y_1,y_2)=?$ on $(0,\frac{}{6}).$

$1.$ Is $\{y_1,y_2\}$ a fundamental set for $6x^{5}sin(3x)D^{2}y-3x^{2}cos(6x)Dy=0$ on $(0,\frac{}{6})?$