Exam 8: Techniques of Integration

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Evaluate the integral. - cot42xdx\int \cot ^ { 4 } 2 x d x

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Evaluate the integral. - xcsc23xdx\int x \csc ^ { 2 } 3 x d x

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Solve the problem. -The charge q\mathrm { q } (in coulombs) delivered by a current i\mathrm { i } (in amperes) is given by q=idt\mathrm { q } = \int \mathrm { i } \mathrm { dt } , where tt is the time (in seconds). A damped-out periodic wave form has current given by i=e3tcos5t\mathrm { i } = \mathrm { e } ^ { - 3 \mathrm { t } } \cos 5 \mathrm { t } . Find a formula for the charge delivered over time tt .

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Evaluate the integral. - (2x1)ln(14x)dx\int ( 2 x - 1 ) \ln ( 14 x ) d x

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Evaluate the integral. - sin8tsin5tdt\int \sin 8 t \sin 5 \mathrm { tdt }

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Use a trigonometric substitution to evaluate the integral. - 1/e1dy4yy(lny)2\int _ { 1 / e } ^ { 1 } \frac { d y } { 4 y - y ( \ln y ) ^ { 2 } }

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Evaluate the integral. - 247xlnxdx\int _ { 2 } ^ { 4 } 7 x \ln x d x

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Integrate the function. - 4x2x4dx,x<2\int \frac { \sqrt { 4 - x ^ { 2 } } } { x ^ { 4 } } d x , x < 2

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Evaluate the integral. - ππ1+cosx2dx\int _ { - \pi } ^ { \pi } \sqrt { \frac { 1 + \cos x } { 2 } } d x

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Evaluate the integral. - 0π/4sin7ydy\int _ { 0 } ^ { \pi / 4 } \sin ^ { 7 } y d y

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Evaluate the integral. - e2xx2dx\int e ^ { 2 x } x ^ { 2 } d x

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Solve the problem. -Find the volume generated by revolving the curve y=cos5xy = \cos 5 x about the xx -axis, 0xπ/600 \leq x \leq \pi / 60

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Evaluate the integral. The integral may not require integration by parts. - lnxx4dx\int \frac { \ln x } { x ^ { 4 } } d x

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Evaluate the integral. - 0π/2cos5tcos4tdt\int _ { 0 } ^ { \pi / 2 } \cos 5 t \cos 4 t d t

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Integrate the function. - x2(x216)5/2dt\int \frac { x ^ { 2 } } { \left( x ^ { 2 } - 16 \right) ^ { 5 / 2 } } d t

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Evaluate the integral. - 4xsinxdx\int 4 x \sin x d x

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Integrate the function. - x3x2+2dx\int \frac { x ^ { 3 } } { \sqrt { x ^ { 2 } + 2 } } d x

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Evaluate the integral. - tan53xdx\int \tan ^ { 5 } 3 x d x

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Find the area of the region enclosed by the curve y=xcosxy = x \cos x and the xx -axis for 52πx72π\frac { 5 } { 2 } \pi \leq x \leq \frac { 7 } { 2 } \pi .

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Evaluate the integral. - 7cos35xdx\int 7 \cos ^ { 3 } 5 x d x

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