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Let F=(3x+15y)i+(3x3y)j\overrightarrow { \vec { F } } = ( 3 x + 15 y ) \vec { i } + ( 3 x - 3 y ) \vec { j }

question 58

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Let F=(3x+15y)i+(3x3y)j\overrightarrow { \vec { F } } = ( 3 x + 15 y ) \vec { i } + ( 3 x - 3 y ) \vec { j } Evaluate CFdr\int_{C} \vec{F} \cdot d \vec{r} , where C is parameterized by r(t)=ti+12t2j,0t2\vec { r } ( t ) = t \vec { i } + \frac { 1 } { 2 } t ^ { 2 } \vec { j } , \quad 0 \leq t \leq 2


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