Add or subtract as indicated. Simplify, if necessary.- 
- 
A. 
B. - 
C. 
D. - 
Answer: D
Mathematics
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Find the curvature of the space curve.r(t) = (t + 4)i + 8j + (ln(sec t) + 6)k
A. ? = sec t B. ? = csc t C. ? = cos t D. ? = sin t
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Find fx, fy, and fz.f(x, y, z) = z(ex)y
A. fx = zxexy; fy = zyexy; fz = exy B. fx = zexy; fy = zexy; fz = exy C. fx = zyexy; fy = zxexy; fz = exy D. fx = zyexy; fy = zxexy; fz = zexy
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Mathematics
Find the extreme values of the function subject to the given constraint.
A. Maximum: 3 at 
minimum: -3 at 
B. Maximum: 3 at 
and 
minimum: -3 at 
and 
C. Maximum: 3 at 
minimum: -3 at 
D. Maximum: 3 at 
minimum: -3 at 
Mathematics