Find the derivative.s = t5 cos t - 14t sin t - 14 cos t
A. 
= - t5 sin t + 5t4 cos t - 14t cos t - 28 sin t
B. 
= t5 sin t - 5t4 cos t + 14t cos t
C. 
= - t5 sin t + 5t4 cos t - 14t cos t
D. 
= - 5t4 sin t - 14 cos t + 14 sin t
Answer: C
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Solve the problem by writing an appropriate system of equations and using the inverse of the coefficient matrix to solve the system.The sum of three numbers is 5. The sum of the first and second numbers is 3, and the first number is one more than three times the third number. How many of the numbers are even numbers?
A. 2 B. 1 C. None D. 3
Solve.Find the volume of the solid generated by revolving the region bounded by the curve 
the 
and the vertical line 
about the x-axis.
A. ? e B. ?(e2 - 1) C. 2?(e2 - 1) D. ?(e - 1)
Find the additive inverse and multiplicative inverse.- 
A. 
, - 
B. - 
, - 
C. 
, 
D. - 
, 