TeXViewRenderingEngine katex(); $Package's mathematical formula $... $, and does not translate into a mathematical formula about flutter_tex

[MisterZhu]

This is the code I used
Figure 1 is renderingEngine: TeXViewRenderingEngine katex (),
Figure 2 is renderingEngine: TeXViewRenderingEngine mathjax (),
But now I need renderingEngine: TeXViewRenderingEngine katex (), can display properly
Related code：

TeXView mathdown(String content) {
  String str = r"""Calculus is a branch of mathematics that deals with the derivatives and integrals of functions. Here is an example calculus:
Example: Find the derivative of the function $f(x)=x^3$at $x=2$.
Solution: Using the derivation formula, we can find the derivation of $f'(x)$:
$$f'(x) = 3x^2$$
Then, put $x=2$into $f'(x)$to get:
$$f'(2) = 3(2)^2 = 12$$
Thus, the derivative of the function $f(x)$at $x=2$is $12$.""";
    return TeXView(
      renderingEngine: TeXViewRenderingEngine.katex(),
      child:
      TeXViewDocument(
        str,
        style: TeXViewStyle(
          margin: TeXViewMargin.only(top: 10),
          fontStyle: TeXViewFontStyle(
            fontSize: 16,
          ),
          contentColor: TBDefVal.chatRegularColor,
        ),
        // 设置字体颜色
      ),
      style: const TeXViewStyle(
        backgroundColor: Colors.white,
      ),
    );
  }

[shah-xad]

use (your latex code) for inline rendering.