PROGRAMMING:Hyperbolic sine function (*)

Calculate the value of $$\ Sinh x $$according to McLaughlin's formula.
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####Input format
> $$x$$ $$\epsilon$$
Note: $$x $$is the exponent and $$$epsilon $$is the calculation precision.
####Output format
> $$y$$
Note: $$y $$is the value of $$e ^ x $$. Output 6 decimal places with% f format qualifier.
Requirement: the absolute value of the last item calculated is less than $$\ epsilon $$.
####Input sample
```in
0.5 0.0000001
```
####Output sample
```out
zero point five two one zero nine five
```







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