Solve the problem.Find the area of the region enclosed by the curve y = x cos x and the x-axis for ? ? x ? ?.

A. 13?
B. 12?
C. -13?
D. -12?


Answer: B

Mathematics

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Use the method of undetermined coefficients to solve the differential equation. + y = x + sin 8x;   = 1 and y = 0 when x = ?

A. y = -  cos x + ? sin x + x -  sin 8x
B. y =  sin x + ? cos x + x -  sin 8x
C. y = -  sin x + ? cos x + x -  sin 8x
D. y = -  sin x - ? cos x + x -  sin 8x

Mathematics

Provide an appropriate response.Solve the system of equations using any method:2x + y = 44x + 3y = 13

A.  
B. (2, 0)
C. (7, -5)
D.  

Mathematics

Give a verbal representation of f(x).f(x) = 4x - 3

A. Multiply the input x by 3 and then subtract 4 to obtain the output y. B. Multiply the input x by 4 and then add 3 to obtain the output y. C. Multiply the input x by 4 and then subtract 3 to obtain the output y. D. Divide the input x by 4 and then add 3 to obtain the output y.

Mathematics

Graph the function.f(x) =   ? 2x.

A.

B.

C.

D.

Mathematics