Find the curvature of the space curve.r(t) = (7 t sin t + 7 cos t)i + 7j + (7t cos t - 7 sin t)k
A. ? = 
B. ? = - 
C. ? = 7t
D. ? = 
Answer: A
Mathematics
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Find the exact value of the expression.
A. 
B. 
C. 
D. 2
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Solve the equation for the indicated variable. Assume that the dimensions are such that matrix multiplication and addition are possible and that inverses exist when needed.Solve for C: CZ = Y
A. C = YZ-1 B. C = ZY-1 C. C = Z-1Y D. C = Y/Z
Mathematics
Determine the domain of the function.r(x) = 
A. {x| x ? 6 and x ? 8} B. {x| x ? -6 and x ? -8} C. {x| x ? 5 and x ? -4} D. {x| x ? -5 and x ? 4}
Mathematics