Find the coordinates of points where the graph of 
has horizontal tangents. As a check, graph 
and see whether the points you found look as though they have horizontal tangents.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: C
Mathematics
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = sin 3yi + cos 7xj; C is the rectangle with vertices at (0, 0), 
, 
, and 
A. - 
?
B. - 
?
C. 
?
D. 0
Mathematics
Solve the problem.Suppose that the cost of an item, excluding tax, is $2.25. The algebraic expression 2.25x describes the cost, in dollars, of purchasing x units of that item. Evaluate the algebraic expression when x = 50.
A. $562.50 B. $11.25 C. $1125.00 D. $112.50
Mathematics
Find the indicated vector.Let u = 
, v = 
. Find u - v.
A. 
B. 
C. 
D. 
Mathematics
Find the x- and y-intercepts. Then graph the equation.5x - 15y = 0
A. (0, 0); (0, 0)
B. (0, 0); (0, 0)
C. (0, 0); (0, 0)
D. (0, 0); (0, 0)
Mathematics