Graph the equation.
+ 
= 1
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the gradient field of the function.f(x, y, z) = ln
+ z4
A. ?f = 
i + 
j + 
k
B. ?f = 
i + 
j + 
k
C. ?f = 
i + 
j + 
k
D. ?f = 
i + 
j + 
k
Mathematics
Find the center of the ellipse. 25(x - 6)2 + 9(y - 4)2 = 225
A. (-6, -4) B. (4, 6) C. (6, 4) D. (25, 9)
Mathematics
Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at 
and 
. The cross sections perpendicular to the x-axis between these planes are squares whose bases run from the parabola 
to the parabola 
.
A. 1568 B. 1536 C. 784 D. 196
Mathematics
Plot the complex number in the complex plane.z = 4i
A. 
B. 
C. 
D. 
Mathematics