F(x,y,z) = x^2*y^3*z i + sin(xyz) j + xyz k
S is the part of the cone y^2 = x^2+z^2 that lies between the planes y = 0 and y = 3, oriented in the direction of the positive y-axis.
S is the part of the cone y^2 = x^2+z^2 that lies between the planes y = 0 and y = 3, oriented in the direction of the positive y-axis.
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2187pi/4