Evaluate the integral by using a substitution prior to integration by parts.
A. 
[cos (ln x) + sin (ln x)] + C
B. x[cos (ln x) + sin (ln x)] + C
C. 
[cos (ln x) - sin (ln x)] + C
D. x cos (ln x) + sin (ln x)+ C
Answer: A
Mathematics
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Perform the indicated operation.
÷ 
A. 
B. 
C. 
D. 
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Use the change of base formula and a calculator to approximate the logarithmic expression. Round your answer to four decimal places.log
180.2
A. 0.3891 B. 2.8989 C. 5.7977 D. 0.1725
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Evaluate the integral.
A. ln 4
B. 1 + ln 2
C. -ln 2
D. 
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Solve the equation.0.4x - 0.7x - 9 = 15
A. 80 B. -80 C. -74 D. 74
Mathematics