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If x=2sint1+costx = \frac { 2 \sin t } { 1 + \cos t }

Question 100

Multiple Choice

If x=2sint1+costx = \frac { 2 \sin t } { 1 + \cos t } , find dxdt\frac { d x } { d t } .


A) 12+cost\frac { 1 } { 2 + \cos t }
B) 21+cost\frac { 2 } { 1 + \cos t }
C) 2cost1+sint\frac { 2 \cos t } { 1 + \sin t }
D) 2cost(1+cost) 2\frac { 2 \cos t } { ( 1 + \cos t ) ^ { 2 } }

Correct Answer:

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