Determine if the given sequence could be an arithmetic sequence.
, 
, 
, 
, 
, . . .
A. Yes
B. No
Answer: B
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Given a group of students: 
or 
list and count the different ways of choosing the following officers or representatives for student congress. Assume that no one can hold more than one office.Three representatives, if two must be female and one must be male
A. BDA, BDC, BDE; 3 B. BDA, BDC, BDE, BAD, BCD, BED;6 C. BDA, BDC, BDE, DBA, DBC; 5 D. BDA, BDC; 2
Given f(x) and g(x), find 
.f(x) = 6x3 - 7x2 - 7x + 18 and g(x) = 2x + 1
A. 
= 3x2 - 5x - 1 + 
B. 
= 3x2 - 5x - 1
C. 
= x2 - 1 + 
D. 
= 3x2 - 5x - 1 + 
Find the first two nonzero terms of the Maclaurin expansion of the given function.f(x) = xecos x
A. x - 
+ ...
B. ex - e3x3 + ...
C. x - x3 + ...
D. ex - 
+ ...
Divide and check the answer.
A. x2 - 2 + 
B. 3x2 - 2x - 2
C. 3x2 - 2x - 2 + 
D. 3x2 - 2x - 2 + 