I try to run this, but it says there is a format problem, I think with line 3 (fp(x))

```
using ForwardDiff
f(x)=x^6-2
fp(x) = x->ForwardDiff.derivative(f, x)
x=1.5
x=x-(f(x)/fp(x))
```

I try to run this, but it says there is a format problem, I think with line 3 (fp(x))

```
using ForwardDiff
f(x)=x^6-2
fp(x) = x->ForwardDiff.derivative(f, x)
x=1.5
x=x-(f(x)/fp(x))
```

remove the `x->`

, i.e., do

```
fp(x) = ForwardDiff.derivative(f, x)
```

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