[Latihan] Selesaikan persamaan linear berikut dengan menggunakan Konsep kesamaan. a) 8+ t = 10

b) 5x=20

c) 7X-5=9

d) 6-2x=4
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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.