If e-x = 6, write x in terms of the natural logarithm.
A. 6
B. -ln 6
C. ln -6
D. ln 6
Answer: B
Mathematics
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Factor completely.-82x2 + x4 + 81
A. (x + 1)(x - 1)(x + 9)(x - 9) B. (x + 9)2(x - 1)2 C. (x + 1)2(x - 9)2 D. (x2 + 1)(x + 9)(x - 9)
Mathematics
Find the volume of the solid of revolution formed by rotating about the x-axis the region bounded by the curves.y = 
, y = 0, x = 1, x = 9
A. 
?
B. ? ln 9
C. 
?
D. 
?
Mathematics
Find the derivative.s = t3 - csc t + 12
A. 
= 3t2 - csc t cot t
B. 
= t2 - cot2t + 12
C. 
= 3t2 + cot2t
D. 
= 3t2 + csc t cot t
Mathematics
Evaluate the given function.f(x) = x2 + 4x - 5, f(4)
A. 37 B. -5 C. 27 D. 5
Mathematics