Solve the problem.Select the correct statement for the definition of the limit: 
f(x) = L means that __________________
A. if given any number ? > 0, there exists a number ? > 0, such that for all x,
0 < 
< ? implies 
> ?.
B. if given any number ? > 0, there exists a number ? > 0, such that for all x,
0 < 
< ? implies 
< ?.
C. if given a number ? > 0, there exists a number ? > 0, such that for all x,
0 < 
< ? implies 
> ?.
D. if given any number ? > 0, there exists a number ? > 0, such that for all x,
0 < 
< ? implies 
< ?.
Answer: D
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Find the limit.
tan x
A. 1 B. -? C. 0 D. ?
Solve the initial value problem.?2
- 3?y = ?5 sec ? tan ?; ? > 0, y(?) = 0
A. y = - 
- ?2 , ? > 0
B. y = 
+ ?3 , ? > 0
C. y = - 
- ?3 , ? > 0
D. y = 
+ ?2 , ? > 0
Write a formula for the general term, or nth term, for the given sequence.-3, 12, -48, 192, . . .
A. an = -3 + (-4)n B. an = -3(-4)n-1 C. an = -3(-4)n D. an = -12n-1
Solve the equation.log39 = x
A. {2} B. {12} C. {27} D. {3}