Integrate the function., x > 3

A.  + C
B. -  + C
C.  + C
D. -  + C


Answer: B

Mathematics

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Use a calculator to approximate the area of the surface generated when the given curve is revolved about the x-axis. Round to two decimal places when necessary.y = sinx on  

A. 1.15 B. 7.65 C. 13.39 D. 5.1

Mathematics

Solve.From a series of measurements, the mean voltage in a certain line is found to be 26,420 V with a standard deviation of 210 V. A breaker must be installed to protect against surges in voltage. If the breaker is set so that it is activated only about 0.1% of the time, at what level is it set?

A. 26,630 V B. 27,260 V C. 26,840V D. 27,050 V

Mathematics

Determine if the equation is an identity.cos (A + B) cos (A - B) = cos2 A + cos2 B - 1

A. No B. Yes

Mathematics

Find the relative extrema, if any, of the function. Use the second derivative test, if applicable. ? ?

A. Relative minimum: 
B. Relative maximum: 
C. Relative minimum: 
D. Relative maximum: 
E. none

Mathematics