Find and classify all critical points of the function f(x,y, z, w) = x +y+3z2 + w² +3ry+6xz +5rw + 4yz + 2yw+5x-3y+6w.

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Q: , Find and classify all critical points of the function f(z.y, z, w) = + +322 + u + 3ry + 6zz + 5zw…

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