Hello, I'm new to Maple and I'm having some difficulty using the program.

So I'm asked to "Find the numerical (decimal) value of the function h'(x) for x = square root of 2."

I tried typing in: D(h)(sqrt(2.0)); however it returns: D(h)(√2)

I think I may have typed in my prior coding incorrectly.

> h := G(f(x));

> h := unapply(h(x), x);
 
> dh := D(h);
     ...