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The Domain of the Function f(x,y)=2x+y1x2y2f ( x , y ) = \frac { 2 x + y } { \sqrt { 1 - x ^ { 2 } - y ^ { 2 } } }

Question 27

Multiple Choice

The domain of the function f(x,y) =2x+y1x2y2f ( x , y ) = \frac { 2 x + y } { \sqrt { 1 - x ^ { 2 } - y ^ { 2 } } } is


A) {(x,y) :x2+y21}\left\{ ( x , y ) : x ^ { 2 } + y ^ { 2 } \neq 1 \right\}
B) {(x,y) :x2+y2>1}\left\{ ( x , y ) : x ^ { 2 } + y ^ { 2 } > 1 \right\}
C) {(x,y) :x2+y21}\left\{ ( x , y ) : x ^ { 2 } + y ^ { 2 } \geq 1 \right\}
D) {(x,y) :x2+y2<1}\left\{ ( x , y ) : x ^ { 2 } + y ^ { 2 } < 1 \right\}
E) {(x,y) :x2+y21}\left\{ ( x , y ) : x ^ { 2 } + y ^ { 2 } \leq 1 \right\}

Correct Answer:

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