Use the Gauss-Jordan method to solve the system of equations.
A. x = 0, y = 2, z = -1
B. x = -1, y = 0, z = 2
C. x = -1, y = 2, z = 0
D. No solution
Answer: A
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Graph the curve described by the function, indicating the positive orientation.r(t) = 2cos t i + 3j + 2 sin t k, for 0 ? t ? 2?
A. 
B. 
C. 
D. 
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A. 
B. 
C. 
D. 