Express the number in terms of i.
A. 2i
B. 2
C. -2i
D. ±2i
Answer: A
Mathematics
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Compute the gradient of the function at the given point.
A. 
j + 
k
B. 
j + 
k
C. - 
j + 
k
D. 
j - 
k
Mathematics
Find, correct to the nearest degree, the angle between the planes. Select the correct answer.
 multiple choice.png)
Mathematics
Graph the given line.y = -5
A. 
B. 
C. 
D. 
Mathematics
Let 
, 
, 
data-wiris-created="true" varid="variable_id_field" variablename="impvar_6bc2313e8b1d4cfab5bf487b9" />.
?
Perform the operation: 
.
?
A. 
?
B. 
?
C. 
?
D. 
?
E. 
?
Mathematics