- #1

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- 11

## Homework Statement

## Homework Equations

**u=a+ b(x-c)^2**

**We have two boundary conditions at x=0, u=u(entrance) and x=L, u=u(exit)**

**Source: Fluid Mechanics by Çengel/Cimbala**

## The Attempt at a Solution

**I cannot understand the parabolic equation in the x-direction.**