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
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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
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. 
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.
Graph the function.f(x) = 
? 2x.
A. 
B. 
C. 
D. 