9.(6') Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point. fix,v) = 4x2+ 8m; + 16y2 10. (6') Find the domain of the function fix, it} = #062 \"My1 -9) 11. (6') For the function w = xv + yz Hz, at = Bu 4- v, y = 3u v, and z = uv. Express and Bu awusing the chain rule and by expressingw directly in terms of u and v before 6v differentiating