More general fracture pressure distributions

Example 2-7. More general fracture pressure distributions. 

The principal value integral in Equation 2-104 requires more labor. However, we can easily verify that 

These results assist in evaluating the more complicated integrals. Let us consider, for instance, the expression for the total volume flow rate Q in the case of constant density liquids in anisotropic media. From Equation 2-47, we find +1 

This provides the required formula. We emphasize that Equation 2-112, which assumes pf( = Cq -i- Ci -i- C2 2 + C3 3 -1- clearly displays the 

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