20 19 February 12 update:
Let's take a look at some people's favorite news and find that there are quite a few objections, so I will update it specially.
The answer is outdated. In the past two years, technologies such as image recognition and machine learning have developed rapidly, and the performance of mobile phones has also improved many times. It seems that there are still many apps that recognize software formulas. For example, a Photomath left in the mobile phone can be identified by the camera or input by yourself. (basically no need, how do you feel)
Photomath official introduction
Just aim your camera at the math problem, and Photomath will magically display the results and provide detailed step-by-step instructions.
Photomath provides:
Camera calculator
handwriting recognition
Step by step guidance
Intelligent calculator
-Graphical interface (new design)
Photomath supports arithmetic, integer, fraction, decimal, root, algebraic expression, linear equation, inequality, unary quadratic equation or inequality, absolute equation and inequality, equation, logarithm, trigonometric function, exponential function and derivative and integral of logarithmic function.