Find the potential function f for the field F.F = (y - z)i + (x + 2y - z)j - (x + y)k
A. f(x, y, z) = x + y2 - xz - yz + C
B. f(x, y, z) = xy + y2 - x - y + C
C. f(x, y, z) = x(y + y2) - xz - yz + C
D. f(x, y, z) = xy + y2 - xz - yz + C
Answer: D
Mathematics
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Evaluate the integral.
A. - 
y2 cos 7y + 
y sin 7y + 
cos 7y + C
B. - 
y2 sin 7y + 
y cos 7y + 
sin 7y + C
C. - 
y2 cos 7y + 
y sin 7y + 
cos 7y + C
D. 
y2 cos 7y - 
y sin 7y - 
cos 7y + C
Mathematics
Solve the differential equation.y'' + 14y' + 29y = 0
A. y = e-7x(C1 cos 2
x + C2 sin 2
x )
B. y = e7x(C1e 2
x + C2e- 2
x )
C. y = e-7x(C1e 2
x + C2e- 2
x )
D. y = e-2
x(C1e 7x + C2e- 7x )
Mathematics
Find the area.
A. 225 m2 B. 60 m2 C. 112.5 m2 D. 30 m2
Mathematics
Round off the approximate number as indicated.5802 3 significant digits
A. 5802 B. 5800 C. 5900 D. 4300
Mathematics