Write the value of `inte^(x)e^(e^x)e^(e^(e^x))dx`.

Explanation

Let `e^(e^(e^x))=t rArr e^(e^(e^x)).e^(e^x).e^xdx=dt`
:. The integral becomes intdt=t+Cp=e^[e^(e^x)]+C.