Periodic absolute value function

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Define

$$h(x)=|x|$$

on the interval $[-1,1]$ and extend the defintion of $h$ to all of $\mathbb{R}$ by requiring that $h(x+2)=h(x)$.

Now define the function:

$$h_n (x)=\frac{1}{2^n} h(2^n x)$$

Could you please help me understand why the maximum height of the latter function is $\frac{1}{2^n}$ and the period is $\frac{1}{2^{n-1}}$?

My confusion arises from the fact that I see no reason why the $2^n$ cannot be cancelled based on the definition of $h$. We are left with the original function in this case.

Thanks.

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The maximum of $h(x)$ is $1$.

We have $h_n(x)=\frac1{2^n}h(t)$, where $t=2^nx$

As we have maximum of $h$ as 1.

$$h(t)\le1$$ $$h_n(x)=\frac1{2^n}h(t)\le\frac{1}{2^n}$$