Question

Please evaluate the following integrals. ∫ dx/e^(x-1)

Answer 1

\[\int\frac{dx}{e^{x-1}}=\int e^{1-x}~dx\]
Substitute \(u=1-x\), so that \(-du=dx\):
\[-\int e^{u}~du\]

Answer 2

What is the answer sir?

Answer 3

That's for you to find out. I've given enough hints.

Answer 4

another hint please. Thank you so much

Answer 5

I solved this already for you.

Answer 6

I didnt get it sir. ;(