Solve the problem.Find the area between y = ln x and the x-axis from x = 1 to x = 3. Give your answer in exact form.
A. 3 ln 3 - 2
B. ln 3
C. 
D. 3 ln 3 - 3
Answer: A
Mathematics
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Find the center of mass of the wire that lies along the curve r and has density ?.r(t) = 5ti + 5tj + 7t2k, 0 ? t ? 1; ?(x, y, z) = 
A. 
B. 
C. 
D. 
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Find the inverse of the invertible matrix.
A. 
B. 
C. 
D. 
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Which graph is Eulerian?
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Find the area of the circle. Use 3.14 or 
for ? as indicated.Use 3.14 for ?.
A. 28.26 ft2 B. 254.34 ft2 C. 63.585 ft2 D. 56.52 ft2
Mathematics