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**1. Homework Statement**

i have to integrate e^(-y) / y

and i found out that you have to use this exponential integral and someone else said it doesnt have an integral. either way im thoroughly confused

**3. The Attempt at a Solution**

i have no clue what so ever. The original question had it in dy/dx=y*e^(x+y) but that above question is all i need help with.