Find 
and 
.f(x, y) = x3 - 7x2y + 2xy3
A. 
= 3x2 + 2xy + 2y3; 
= -7x2 + 3xy2
B. 
= 3x2 - 14xy + 2y3; 
= -7x2 + 6xy2
C. 
= x2 - 7xy + 2y3; 
= -7x2 + 2xy2
D. 
= 3x2; 
= -7x2 + 6xy2
Answer: B
Mathematics
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A. {3}
B. {3, -3}
C. {
, - 
}
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A. 
B. 
C. 
D. 
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Approximate the natural logarithm with a scientific calculator. Round to four decimal places.ln 21,200,000
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