Solve the equation in the complex number system.x4 - 2x2 - 3 = 0
A. {
i, i}
B. {-
i, -i}
C. {- 
, 
, i, -i}
D. {
, 3}
Answer: C
Mathematics
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Find the additive inverse and multiplicative inverse.- 
A. 
, - 
B. - 
, - 
C. 
, 
D. - 
, 
Mathematics
Evaluate.9x, when x = 4
A. 13 B. 36 C. 162 D. 27
Mathematics
Perform the requested operation or operations. Find the domain of each.f(x) = 
; g(x) = cos xFind f - g.
A. 
+ cos x; domain: [-2, ?)
B. 
; domain: [-2, ?)
C. (cos x)(
); domain: [-2, ?)
D. 
- cos x; domain: [-2, ?)
Mathematics
Draw the graph of the equation and label the vertex.
A. 
B. 
C. 
D. 
Mathematics