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

Question 112

Multiple Choice

Rotate the axes to eliminate the xyx y -term in the equation. Then write the equation in standard form.
41x2+18xy+41y2800=041 x ^ { 2 } + 18 x y + 41 y ^ { 2 } - 800 = 0


A) (x) 225+(y) 236=1\frac { \left( x ^ { \prime } \right) ^ { 2 } } { 25 } + \frac { \left( y ^ { \prime } \right) ^ { 2 } } { 36 } = 1
B) (x) 29+(y) 216=1\frac { \left( x ^ { \prime } \right) ^ { 2 } } { 9 } + \frac { \left( y ^ { \prime } \right) ^ { 2 } } { 16 } = 1
C) (x) 216+(y) 236=1\frac { \left( x ^ { \prime } \right) ^ { 2 } } { 16 } + \frac { \left( y ^ { \prime } \right) ^ { 2 } } { 36 } = 1
D) (x) 29+(y) 225=1\frac { \left( x ^ { \prime } \right) ^ { 2 } } { 9 } + \frac { \left( y ^ { \prime } \right) ^ { 2 } } { 25 } = 1
E) (x) 216+(y) 225=1\frac { \left( x ^ { \prime } \right) ^ { 2 } } { 16 } + \frac { \left( y ^ { \prime } \right) ^ { 2 } } { 25 } = 1

Correct Answer:

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