Solve the Problem$\text { Find the maximum value of } f ( x , y , z , w ) = x + y + z + w \text { subject to } x ^ { 2 } + y ^ { 2 } + z ^ { 2 } + w ^ { 2 } = 1 \text {. }$

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The Answer of Solve the Problem$\text { Find the maximum value of } f ( x , y , z , w ) = x + y + z + w \text { subject to } x ^ { 2 } + y ^ { 2 } + z ^ { 2 } + w ^ { 2 } = 1 \text {. }$

Solve the Problem A) 10
B) 4
C) 2
D) 1

Definitions:

Solve the Problem A) 10 B) 4 C) 2 D) 1

Definitions:

Solve the Problem A) 10
B) 4
C) 2
D) 1