Find the unit tangent vector of the given curve.r(t) = (4 sin3 5t)i + (4 cos3 5t)j
A. T(t) = (4 sin 5t)i - (4 cos 5t)j
B. T(t) = (sin 5t)i - (cos 5t)j
C. T(t) = (4 cos 5t)i - (4 sin 5t)j
D. T(t) = (60 sin 5t)i -(60 cos 5t)j
Answer: B
Mathematics
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, for x ? -3
A. Domain: [-3, ?); range: (-?, 0] 
B. Domain: (-?, -3]; range: [0, ?) 
C. Domain: [-3, ?); range: [0, ?) 
D. Domain: [3, ?); range: [0, ?) 
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Find the sum or difference.
- 
A. 6
B. 0
C. 
D. 
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Solve the system of equations.4x+ y- 3z =-19-x+ 4y+ 2z=3-6x + 7y+ 7z=25
A. No solution; inconsistent system of equations B. (-5, -1, 1) C. Infinite number of solutions; dependent equations D. (-2, -5, 2)
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Solve for the missing side, x.
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