Solve.A bridge with a semi-elliptical arch extends over a river as shown. Find an equation of the ellipse that represents the arch of the bridge.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
Mathematics
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Calculate the flux of the field F across the closed plane curve C.F = (x+y)i + xyj; the curve C is the closed counterclockwise path around the rectangle with vertices at 
and 
A. 
B. 
C. - 
D. 30
Mathematics
Solve the problem.Find the values of a, b and c that make 
a gradient field.
What will be an ideal response?
Mathematics
Evaluate the expression for the given replacement values.xy for x = 5, y = -2
A. -10 B. 7 C. 10 D. 3
Mathematics
Graph the function.f(x) = 2
A. 
B. 
C. 
D. 
Mathematics