Find the equation for the level surface of the function through the given point.f(x, y, z) = e(x2 + y2 - z), (4, 3, 2)
A. ln(x2 + y2 - z) = 23
B. x2 + y2 - z = e23
C. x2 + y2 - z = ln(23)
D. e(x2 + y2 - z) = ln(23)
Answer: C
Mathematics
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Evaluate the integral.
A. 
ln
- 
ln
+ C
B. 
ln
+ 
ln
+ 
tan-1(et) + C
C. 
ln
- 
ln
+ 
tan-1(et) + C
D. 
ln
- 
ln
+ 
tan-1 t + C
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Estimate the fraction as 0, 
, or 1.
A. 1
B. 0
C. 
Mathematics
Test the equation for symmetry with respect to the given axis, line, or pole.r = 3 sin 3?;
the line ? = 
A. has symmetry with respect to the line ? = 
B. may or may not have symmetry with respect to the line ? = 
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Write the equation of the line that passes through the point P(0,0) and is perpendicular to the line 
.
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics