1.Find the area of the region D ,which is the part of the plane
x+2y+z=4 that lies inside the cyliner by x^2+y^2=4
2.Find the maximum and minimum values of the fuction f(x y z)=x^2+y^2+z^2
on the region described by inequality x^4+y^4+z^4 <= 1
想請問這兩題怎麼算？謝謝
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