Find all the first order partial derivatives for the following function.f(x, y) = x3 - 7x2y - 3xy3
A. 
= 3x2 + 2xy - 3y3; 
= -7x2 + 3xy2
B. 
= x2 - 7xy - 3y3; 
= -7x2 - 3xy2
C. 
= 3x2; 
= -7x2 - 9xy2
D. 
= 3x2 - 14xy - 3y3; 
= -7x2 - 9xy2
Answer: D
Mathematics
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A. y = 
x + 3
B. y = 
x + 3
C. y = - 
x + 3
D. y = - 
x + 3
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Decide whether or not the functions are inverses of each other.f(x) = (x - 3)2, x ? 3; g(x) = 
+ 3
A. Yes B. No
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Find the largest open interval where the function is changing as requested.Decreasing f(x) = 
A. (-?, -4) B. (-?, 4) C. (-4, ?) D. (4, ?)
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Determine whether the two expressions appear to be equivalent by evaluating both expressions for several different values of x.6x - (2 - 3x); 3x - 2
A. Not equivalent B. Equivalent
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