Convert Eulerian to Lagrangian Form: Fluid Mechanics

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how to convert eulerian form to lagrangian form...
consider the esample
the velocities at a point in a fluid in a eulerian system are given...say u = x+y+z+t ;v = 2(x+y+z)+t ; w = 3(x+y+z)=t... find the diplacements in lagrangian form...

can somebody please thell the method or refer some book
 
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