# Revision history [back]

Sage gives you the correct answer. You can check it for example in wolframalpha.

Ei


is the exponential integral (and not a product).

To obtain better formatted code you can copy-paste your code,

mark it and use 101... icon.

Sage gives you the correct answer. You can check it for example in wolframalpha.

Ei


is the exponential integral (and not a product).

To obtain a better formatted code you can copy-paste your code,

mark it and use the 101... icon.