Install MaTeX:
ResourceFunction["MaTeXInstall"][]
Check whether it works:
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<<MaTeX`
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MaTeX["\\sum_{k=1}^{\\infty} \\frac{1}{k^2} = \\frac{\\pi^2}{6}",FontSize->24]
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Put this code inside your init.m file (https://mathematica.stackexchange.com/questions/263698/how-to-write-latex-style-math-in-notebook-as-text/266146#266146). Modify if necessary.
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SystemOpen["init.m"]
(*use MaTeX to format inline TeX*)Needs["MaTeX`"];$useMaTeXMag = 2;$useMaTeXBaselineShift = 0;$MaTeXPreamble = {};InputAssistant`TeXStringToBoxes // Unprotect;InputAssistant`TeXStringToBoxes[s_String] /; TrueQ[$useMaTeXQ] := AdjustmentBox[ ToBoxes @ MaTeX[s, Magnification -> $useMaTeXMag, "Preamble" -> $MaTeXPreamble], BoxBaselineShift -> $useMaTeXBaselineShift ];InputAssistant`TeXStringToBoxes // Protect;$useMaTeXQ = True;
So that it would look something like this:
Now Ctrl+4 will return nice Graphics
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Instead of this ugly thing:
Add your preamble with necessary packages and other stuff:
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$MaTeXPreamble={"\\usepackage{tikz}","\\usetikzlibrary{positioning}","\\usepackage{tikz-cd}","\\usetikzlibrary{cd}"};
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