For stream function ψ = 3x2 - y3, the magnitude of velocity at the po

1.	For stream function ψ = 3x2 - y3, the magnitude of velocity at the point (2, 1) is
A.	12.37
B.	12
C.	13
D.	13.5
Answer» B. 12

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For stream function ψ = 3x2 - y3, the magnitude of velocity at the point (2, 1) is

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