sympy__sympy-15609

Indexed matrix-expression LaTeX printer is not compilable

Verdict: the fix is stated in the issue (Tier A).

It's pretty simple to solve, `_print_MatrixElement` of `LatexPrinter` is not calling `self._print` on the indices.

The text states the fix: “It's pretty simple to solve, `_print_MatrixElement` of `LatexPrinter` is not calling `self._print` on the indices.”

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