Exam 7: Techniques of Integration

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Evaluate the integral. ∫417x2−16dx\int _ { 4 } ^ { \sqrt { 17 } } \sqrt { x ^ { 2 } - 16 } d x

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8ln⁡417+1+1728 \ln \frac { 4 } { \sqrt { 17 } + 1 } + \frac { \sqrt { 17 } } { 2 }

Evaluate the integral using an appropriate trigonometric substitution. ∫13x2−1x4dx\int _ { 1 } ^ { 3 } \frac { \sqrt { x ^ { 2 } - 1 } } { x ^ { 4 } } d x

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16281\frac { 16 \sqrt { 2 } } { 81 }

Use Simpson's Rule to approximate the integral with answers rounded to four decimal places. ∫−11x2+1dx;n=6\int _ { - 1 } ^ { 1 } \sqrt { x ^ { 2 } + 1 } d x ; \quad n = 6

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Estimate the area of the shaded region by using the Trapezoidal Rule with n=2n = 2 . Round the answer to the nearest tenth.  Estimate the area of the shaded region by using the Trapezoidal Rule with  n = 2 . Round the answer to the nearest tenth.

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Use a table of integrals to evaluate the integral. ∫6x+5x2dx\int \frac { \sqrt { 6 x + 5 } } { x ^ { 2 } } d x

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Find the integral. ∫3x−5x2−2x−3dx\int \frac { 3 x - 5 } { x ^ { 2 } - 2 x - 3 } d x

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Use the Table of Integrals to evaluate the integral. ∫x2x6−4dx\int \frac { x ^ { 2 } } { \sqrt { x ^ { 6 } - 4 } } d x

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The region under the graph of y=7x(x+1)y = \frac { 7 } { x ( x + 1 ) } on the interval [1,2][ 1,2 ] is revolved about the xx -axis. Find the volume of the resulting solid.

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Use a table of integrals to evaluate the integral. ∫x3sin⁡(x2+3)dx\int x ^ { 3 } \sin \left( x ^ { 2 } + 3 \right) d x

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Evaluate the integral using integration by parts with the indicated choices of u and dv. ∫6θcos⁡θdθ,u=6θ,dv=cos⁡θdθ\int 6 \theta \cos \theta d \theta , u = 6 \theta , d v = \cos \theta d \theta

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Use the Table of Integrals to evaluate the integral to three decimal places. ∫351x24x2−1dx\int _ { 3 } ^ { 5 } \frac { 1 } { x ^ { 2 } \sqrt { 4 x ^ { 2 } - 1 } } d x

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Evaluate the integral using the indicated trigonometric substitution. ∫x3x2+25dx;x=5tan⁡θ\int \frac { x ^ { 3 } } { \sqrt { x ^ { 2 } + 25 } } d x ; \quad x = 5 \tan \theta

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Evaluate the integral. ∫08(x2+8)e−xdx\int _ { 0 } ^ { 8 } \left( x ^ { 2 } + 8 \right) e ^ { - x } d x

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Find a bound on the error in approximating the integral ∫19ln⁡x9\int _ { 1 } ^ { 9 } \ln x ^ { 9 } using (a) the Trapezoidal Rule and (b) Simpson's Rule with n=10n = 10 subintervals.

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Find the integral. ∫cot⁡2xcsc⁡6xdx\int \cot ^ { 2 } x \csc ^ { 6 } x d x

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Use a table of integrals to evaluate the integral. ∫6x+5x2dx\int \frac { \sqrt { 6 x + 5 } } { x ^ { 2 } } d x

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Evaluate the integral. ∫04xx+8dx\int _ { 0 } ^ { 4 } \frac { x } { x + 8 } d x

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Find the integral. ∫3x2−7x−2(x2+x+1)2dx\int \frac { 3 x ^ { 2 } - 7 x - 2 } { \left( x ^ { 2 } + x + 1 \right) ^ { 2 } } d x

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Determine whether the improper integral converges or diverges, and if it converges, find its value. ∫−2781x3dx\int _ { - 27 } ^ { 8 } \frac { 1 } { \sqrt [ 3 ] { x } } d x

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Evaluate the integral. ∫013x3+6x2+7x+2(x+1)2(x2+1)dx\int _ { 0 } ^ { 1 } \frac { 3 x ^ { 3 } + 6 x ^ { 2 } + 7 x + 2 } { ( x + 1 ) ^ { 2 } \left( x ^ { 2 } + 1 \right) } d x

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