Perform the indicated operations and simplify the expression.
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What will be an ideal response?
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (3t cos t - 3 sin t)j + (3t sin t + 3 cos t)k
A. T = (-3 sin t)j + (3 cos t)k
B. T = (3 cos t)j - (3 sin t)k
C. T = (-sin t)j + (cos t)k
D. T = - 
(sin t)j + 
(cos t)k
Mathematics
Find a formula for the nth term of the sequence.0, -1, 0, 1, 0, -1, 0, 1 (0, -1, 0, 1 repeated)
A. an = cos(n?)
B. an = sin(n?)
C. an = cos
D. an = sin
Mathematics
Solve the equation.
= 12
A. x = 2 B. x = 17 C. x = 16 D. x = 60
Mathematics
Solve the system by graphing.
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A. 
B. 
C. 
D. 
E. inconsistent
Mathematics