Find the derivative of the function at P0 in the direction of u.f(x, y) = ln(-9x - 4y), P0(4, -7), u = 6i + 8j
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Determine convergence or divergence of the series.
A. Diverges B. Converges
Mathematics
Decide whether or not the given equation is an identity.
= cos 2?
A. Yes B. No
Mathematics
Determine the number of significant digits in the given approximate number.0.05002
A. 2 B. 6 C. 5 D. 4
Mathematics
Refer to the following graphs to determine an appropriate response.Graph AGraph B 
? Graph CGraph D 
Which one is the graph of y = 
? What
is it's domain? A. graph D; [0, ?) B. graph B; [0, ?) C. graph A; (-?, ?) D. graph C; {-2, -1, 0, 1, 2}
Mathematics