Use stokes' theorem to evaluate c f · dr where f(x, y, z) = x2yi + 1 3 x3j + xyk and c is the curve of intersection of the hyperbolic paraboloid z = y2 − x2 and the cylinder x2 + y2 = 1 oriented counterclockwise as viewed from above.

Are there options? otherwise, i’d say afghanistan, cyprus, comoros, eritrea, and more are a couple examples of oil-dry countries. let me know if one of those was an option!

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.

Ithink the answer is d.