Solve the problem.The force F (in N) exerted by a cam on a lever is given by F = x4 - 13x3 + 44x2 - 57x + 22, where x (1 ? x ? 5) is the distance (in cm) from the center of rotation of the cam to the edge of the cam in contact with the lever. Find the instantaneous rate of change of F with respect to x when x = 3 cm.
A. -23 N/cm
B. -36 N/cm
C. -15 N/cm
D. -63 N/cm
Answer: B
Mathematics
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Calculate the flow in the field F along the path C.F = - 
i + 
j + 
k , C is the curve 
0 ? t ? 1
A. 21
B. 0
C. 
D. 
Mathematics
Solve the equation.
= 
A. 
B. 11
C. 
D. No solution
Mathematics
List the ordered pair corresponding to the indicated point.
D
A. (3, 5) B. (-3, 4) C. (5, 3) D. (4, -3)
Mathematics
Express the interval in set-builder notation and graph the interval on a number line.(-?, 4.5]
A. {
x > 4.5}
B. {
x ? 4.5}
C. {
x < 4.5}
D. {
x ? 4.5}
Mathematics