# How did they compute this e equation?

1. Feb 2, 2009

### myusernameis

1. The problem statement, all variables and given/known data
this is a question i'm working on, and there's this step i'm stuck on
it looks like this:
2. Relevant equations

3. The attempt at a solution
how come the 9.8 became the 50?

thanks

2. Feb 2, 2009

### rock.freak667

$$\int e^{ax}dx= \frac{1}{a}e^{ax}+C$$

3. Feb 2, 2009

### myusernameis

ohhHHHH .... it seems all simple now

thanks!

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