It looks like you're working with some variables and possibly calculus notation. Let's break it down:

• You're defining $w = x$, where $w$ and $x$ are variables.

Given this relationship, you're asking about $dw$, which suggests you're looking for the differential of $w$ with respect to some variable.

If $w = x$, then:

• The differential $dw$ would be the same as the differential $dx$ because $w$ and $x$ are equal.

Thus, $dw = dx$.

Would you like to go into more detail or explore related concepts? Here are some potential follow-up questions:

1. What does the differential $dw$ represent in a calculus context?
2. How would this relationship change if $w = f(x)$ for some function $f(x)$?
3. Can you explain the geometric interpretation of differentials?
4. How do differentials apply in solving integrals?
5. What is the significance of $dw = dx$ in the context of linear functions?

Tip: When working with differentials, it's important to understand whether you're dealing with explicit functions or implicit relationships, as this can change how you compute and interpret differentials.