Suppose that f(x,y,z)=5x+3y+5z\displaystyle {f{{\left({x},{y},{z}\right)}}}={5}{x}+{3}{y}+{5}{z} at which x2+y2+z2≤32\displaystyle {x}^{{2}}+{y}^{{2}}+{z}^{{2}}\le{3}^{{2}}.
  1. Absolute minimum of f(x,y,z)\displaystyle {f{{\left({x},{y},{z}\right)}}} is  
  2. Absolute maximum of f(x,y,z)\displaystyle {f{{\left({x},{y},{z}\right)}}} is   .

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