Find the derivative.f(x) = 
- 
+ 
A. f'(x) = -3
+ 
- 
B. f'(x) = - 
- 
- 
C. f'(x) = 
- 
- 
D. f'(x) = - 
+ 
- 
Answer: D
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The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 
, y = -8
A. r = 
B. r = 
C. r = 
D. r = 
Find the location of the indicated absolute extremum for the function.Maximum
A. x = -4
B. x = 
C. No maximum
D. x = 0
Determine if the vector u is in the column space of matrix A and whether it is in the null space of A.u = 
, A = 
A. Not in Col A, not in Nul A B. In Col A, not in Nul A C. Not in Col A, in Nul A D. In Col A and in Nul A
Solve the problem.The number of books in a small library increases according to the function 
where t is measured in years. How many books will the library have after 8 years?
A. 7473 B. 5466 C. 2665 D. 6137