Draw the following graph on the interval −195∘ :
y=cos(x)+2
What is the amplitude of the function?
What is the period of the function?

Use stokes' theorem to evaluate c f · dr where c is oriented counterclockwise as viewed from above. f(x, y, z) = xyi + 5zj + 7yk, c is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 81.