# HowTo: Use `bc`

calculator efficiently

a) Raise number to fractional power or take \(n\)th root of number \(x^y\):

```
echo "e(y*l(x))" | bc -l
```

`bc`

calculator efficientlya) Raise number to fractional power or take \(n\)th root of number \(x^y\):

```
echo "e(y*l(x))" | bc -l
```