# exam2practicesolutions - Math 2260 Exam#2 Practice Problem...

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Math 2260 Exam #2 Practice Problem Solutions 1. Evaluate Z tan 3 ( x ) dx.
2. Integrate Z sin 4 (2 x ) dx.
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3. Integrate Z x 2 - 25 x dx.
4. Evaluate Z e 1 x (ln x ) 3 dx.
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5. Suppose a 20 foot chain which weighs 5 pounds per foot is coiled on the ground. One end of the chain is attached to a small crane. How much work does it take to lift this end 20 feet off the ground, so that the chain is fully extended in the air?