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Let sin2x+cos2y=54\sin ^ { 2 } x + \cos ^ { 2 } y = \frac { 5 } { 4 }

Question 19

Multiple Choice

Let sin2x+cos2y=54\sin ^ { 2 } x + \cos ^ { 2 } y = \frac { 5 } { 4 } If dydt=32\frac { d y } { d t } = - \frac { \sqrt { 3 } } { 2 } when x=2π3x = \frac { 2 \pi } { 3 } and y=3π4,y = \frac { 3 \pi } { 4 }, then dxdt\frac { d x } { d t } is


A) -1
B) 12- \frac { 1 } { 2 }
C) 1
D) 12\frac { 1 } { 2 }
E) 32\frac { 3 } { 2 }

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