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

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Solve the problem.Find the values of a, b and c that make  a gradient field.

What will be an ideal response?

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Evaluate the expression for the given replacement values.xy for x = 5, y = -2

A. -10 B. 7 C. 10 D. 3

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Graph the function.f(x) = 2

A.

B.

C.

D.

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