Hi,
I have a function from an old assignment. I am pretty sure I can integrate it using a substitution but I thought mathematica would do it quite simple and give the same answer, instead I get the integral echoed back to me as I would write it on a page (the familiar integral notation instead of syntax). How can I integrate it in mathematica? My apologies if this is a naive question, I am a new user. Any help on what I doing wrong would be appreciated.
Integrate[
e^-(t/\[Theta])^\[Lambda] t^(-1 + \[Lambda]) \[Theta]^-\[Lambda] \
\[Lambda], {t, 0, y}]
Hopefully this is legible, thanks for the tip.
