Posted by **Tammy** on Friday, September 16, 2011 at 1:15pm.

Can someone please show me step by step how to normalize e^-5x in the interval (0, infinity)?

I have read a lot of different books etc but need it explained to me in plain English or showed to me step by step because I am just not getting it.

Thank you

- Physics -
**bobpursley**, Friday, September 16, 2011 at 1:36pm
I assume you mean make the area under the curve 1.0 in the interval.

Area=Constant*INT e^-5x dx from 0 to infinity

1.0=constant* (-1/6 e^-6x ) over the limits

1.0= constant*1/6(e^0 -e^-inf)

6= constant.

check my work, My mind today is wavering, allergy meds today.

- Physics -
**Tammy**, Friday, September 16, 2011 at 1:51pm
Hi Bob,

Thank you for responding so quickly. And sorry to hear about your allergies. They are not fun! The exact question was : normalize the following functions in the interval 0 to infinity: a) e^-5x. The answer my instructor has is 10^1/2 e ^-5x as the answer but I don't know how he got to that answer. Any ideas?

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