Use the power rule and the power of a product or quotient rule to simplify the expression.
3
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the principal unit normal vector N for the curve r(t).r(t) = (4t sin t + 4 cos t)i + (4t cos t - 4 sin t))k
A. N = (-sin t)i - (cos t)k
B. N = (cos t)i - (sin t)k
C. N = - 
(cos t)i - 
(sin t)k
D. N = (sin t)i + (cos t)k
Mathematics
Perform the indicated operations in the proper order.9 - 5(-3)
A. -6 B. 24 C. 6 D. 12
Mathematics
Find the derivative of y with respect to x, t, or ?, as appropriate.y = ln 4x2
A. 
B. 
C. 
D. 
Mathematics
Write an expression in completely factored form for the area of the shaded figure.
A. (x + 4)2 B. (x + 2)(x - 2) C. (x - 4)2 D. (x + 4)(x - 4)
Mathematics