Subtract. Simplify, if possible.7
- 4
A. 2
B. 4
C. -4
D. 3
Answer: D
Mathematics
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Decide whether or not the given equation is an identity.2 cos2 
- 1 = cos ?
A. Yes B. No
Mathematics
Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.
+ 
+ 
+ ... + 
+ ...
A. 
; 5
B. 
; 5
C. 
; 5
D. 
; 5
Mathematics
Provide an appropriate response.Determine the value of 
and simplify your answer.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics