Let $w=3xcosy.$ If $x=u^2+v^2,y=\frac{v}{u},$ find $\frac{\text{d}\text{e}\text{l}\text{w}}{\text{d}\text{e}\text{l}\text{u}}$ and $\frac{\text{d}\text{e}\text{l}\text{w}}{\text{d}\text{e}\text{l}\text{v}}$ at the point $(u,v)=(2,1).$ Give your answers to $2$ decimal places.

$\frac{\text{d}\text{e}\text{l}\text{w}}{\text{d}\text{e}\text{l}\text{u}}=$

$\frac{\text{d}\text{e}\text{l}\text{w}}{\text{d}\text{e}\text{l}\text{v}}=$