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$\int\frac{e^{\left(1+x\right)}}{1+x}dx$
Learn how to solve integral calculus problems step by step online. Find the integral of (e^(1+x))/(1+x). Find the integral. The integral \int\frac{e^{\left(1+x\right)}}{1+x}dx is called 'exponential integral' and is non-elementary. The formula for the exponential integral is: \int\frac{e^x}{x}=Ei(x), where Ei is a special function on the complex plane. As the integral that we are solving is an indefinite integral, when we finish integrating we must add the constant of integration C.