Question: What are the conditions for velocity potential and stream function to be valid? For a fluid flow u = ( 2 x + 3 y

What are the conditions for velocity potential and stream function to be valid?
For a fluid flow u =(2x+3y)ex +(4x-2y)ey
1. Can you Calculate velocity potential and stream function? If you cannot explain why
2.If you can calculate one of the above, please find the expression

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