Evaluate $\frac{1}{\tau} \int\limits_0^\tau{{(e^{\alpha t}-1)e^{-\beta t}}}dt$

Asked Aug 19 '14 at 20:41

Active Aug 19 '14 at 21:44

Viewed 70 times

I have to evaluate $\frac{1}{\tau} \int\limits_0^\tau{{(e^{\alpha t}-1)e^{-\beta t}}}dt$ , where ατ=1.

I did he following:

enter image description here

But they have the following answer:

enter image description here

Have I forgotten something? I did it multiple times. Can't get nearer to their result.

I apologize for not posting everything at once.

edited Aug 19 '14 at 21:44

asked Aug 19 '14 at 20:41

Tanatos Daniel

How's the editing going? – Tom Aug 19 '14 at 20:59
I can't cope with it. Can't understand why I couldn't write everything as I did with the title. – Tanatos Daniel Aug 19 '14 at 21:07
According to Wolfram, the given answer is way wrong... – cjferes Aug 19 '14 at 21:42
It seems to me that your answer is correct. But you need to replace $\alpha$ with $1/\tau$. – mike Aug 19 '14 at 22:26

0 Answers0