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- A net is dipped in a river. Determine the flow rate of water across the net if the velocity vector field for the river is given by v=(x-y,z+y+7,z2) and the net is decribed by the equation y=1-x2-z2, y20, and oriented in the positive y- direction. (Use symbolic notation and fractions where needed.)Let a=<4,1> and b=<7,-7>. What is the x-component of the vector -2a+1b? The answer is not -1.-2 as a linear combination of x 4 and y = -3 Express the vector v =