Multiply and simplify.
? 
A. 
B. 
C. 
D. 120xy
Answer: A
Mathematics
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Find the gradient field F of the function f.f(x, y, z) = ln
+ z9
A. F = 
i + 
j + 
k
B. F = 
i + 
j + 
k
C. F = 
i + 
j + 
k
D. F = 
i + 
j + 
k
Mathematics
Graph the values of x that satisfy the given conditions.-3 < x < 1
A. 
B. 
C. 
D. 
Mathematics
Change the polar coordinates (r, ?) to rectangular coordinates (x, y).(4, 225°)
A. (-2
, -2)
B. (-2, -2
)
C. (2
, 2)
D. (2, 2
)
Mathematics
Simplify the complex rational expression using either Method I or Method II.
A. 
B. 
C. 
D. 
Mathematics