"Web Equation" which recognizes handwritten mathematical expressions automatically to LaTeX or MathML
If you write expressions in the specified area with a mouse, it will automatically recognize and analyze in about 1 second or so,LaTeXYaMathMLIt converts it and outputs a free service for this "Web Equation"is.
This is the initial screen, if you write a formula here with a mouse it will automatically recognize
Choosing Japan from the upper right flag will look like this. I wrote it because I was told "write here".
Such complex expressions are also OK
If you click the tab of "MathML" it will be output like this
Patterns will recognize even if it is somewhat dirty
I could recognize the arrow, it is quite convenient and excellent