Math Problem Statement
Solution
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Math Problem Analysis
Mathematical Concepts
Calculus
Integration
Exponential Functions
Formulas
\( u = 1 + e^{-x} \)
\( \frac{du}{dx} = -e^{-x} \)
\( \int u^{-n} du = \frac{u^{-n+1}}{-n+1} + C \)
Theorems
Substitution method in integration
Suitable Grade Level
University level (Calculus)