Find the inverse of the matrix.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Find the potential function f for the field F.F = - 
i + 
j - 
k
A. f(x, y, z) = 
- 
+ 
+ C
B. f(x, y, z) = 
+ C
C. f(x, y, z) = ln (y - x - z) + C
D. f(x, y, z)= ln 
+ C
Mathematics
Simplify.
÷ 
A. - 
B. - 
C. - 
D. - 
Mathematics
Factor completely.30a3 - 12a2b - 25ab2 + 10b3
A. (30a2 - 5b2)(a - 2b) B. (6a2 - 5b)(5a - 2b) C. (6a2 + 5b2)(5a + 2b) D. (6a2 - 5b2)(5a - 2b)
Mathematics
Find all cube roots of the complex number. Leave answers in trigonometric form.4 - 4i
A. 
cis 100°, 
cis 220°, 
cis 340°
B. 
cis 60°, 
cis 180°, 
cis 300°
C. 
cis 80°, 
cis 200°, 
cis 320°
D. 
cis 100°, 
cis 220°, 
cis 340°
Mathematics