Задача 10840.

The boat crosses the river through the water at a constant speed U, perpendicular to the flow. The flow rate of the river rises from the coast to the middle of the river on the parabolic law: Vx = ky ^ 2. The width of the river h. Find demolition boats downstream from its point of origin to the place of berth on the opposite bank of the river.

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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