Math Problem Statement
Solve the differential equation xydy/dx-xy-x-y-1 =0
Solution
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Math Problem Analysis
Mathematical Concepts
Differential Equations
Substitution Method
Formulas
xy dy/dx = xy + x + y + 1
dy/dx = 1 + 1/x + 1/y + 1/xy
Substitution: u = xy
Theorems
Substitution in Differential Equations
Suitable Grade Level
College Level (Calculus)
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