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Rotate the Axes to Eliminate The xyx y -Term in the Equation

Question 95

Multiple Choice

Rotate the axes to eliminate the xyx y -term in the equation. Then write the equation in standard form.
113x230xy+113y26272=0113 x ^ { 2 } - 30 x y + 113 y ^ { 2 } - 6272 = 0


A) (x) 281+(y) 264=1\frac { \left( x ^ { \prime } \right) ^ { 2 } } { 81 } + \frac { \left( y ^ { \prime } \right) ^ { 2 } } { 64 } = 1
B) (x) 249+(y) 236=1\frac { \left( x ^ { \prime } \right) ^ { 2 } } { 49 } + \frac { \left( y ^ { \prime } \right) ^ { 2 } } { 36 } = 1
C) (x) 264+(y) 264=1\frac { \left( x ^ { \prime } \right) ^ { 2 } } { 64 } + \frac { \left( y ^ { \prime } \right) ^ { 2 } } { 64 } = 1
D) (x) 249+(y) 249=1\frac { \left( x ^ { \prime } \right) ^ { 2 } } { 49 } + \frac { \left( y ^ { \prime } \right) ^ { 2 } } { 49 } = 1
E) (x) 264+(y) 249=1\frac { \left( x ^ { \prime } \right) ^ { 2 } } { 64 } + \frac { \left( y ^ { \prime } \right) ^ { 2 } } { 49 } = 1

Correct Answer:

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