Use the substitution formula to evaluate the integral.sec2 2x dx

A. 2e
B. - 
C.
D. e


Answer: C

Mathematics

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Evaluate the integral.

A. 9 i
B. 9 i + 3 j
C. 0
D. 3 i

Mathematics

Solve the problem.Suppose that the number of VCR's manufactured at a factory is given by  where t is the number of hours that the factory has been in operation. Suppose that the cost, in dollars, of producing n units is given by . Find and interpret 

A. (C?N)(t) = 233 + 245t; This function gives the cost as a function of the number of hours that the factory is in operation. B. (C?N)(t) = 233 + 245t; This function gives the cost as a function of the number of of VCR's produced. C. (C?N)(t) = 233 + 245t; This function gives the number of hours that the factory is in operation as a function of cost. D. (C?N)(t) = 1165 - 245t; This function gives the cost as a function of the number of hours that the factory is in operation.

Mathematics

Subtract.90 - (-22)

A. -68 B. 112 C. -112 D. 68

Mathematics

Determine whether the graph of the given equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.x2 + y2 = 9

A. x-axis B. x-axis, y-axis, origin C. y-axis, origin D. Origin

Mathematics