MathCAD is an interactive mathematical software developed by Mathsoft Company of the United States. The software aims to provide teachers, students and engineers with an integrated working environment with word processing, mathematics and graphics capabilities, so that they can easily write teaching plans, complete homework and write scientific analysis reports. After inputting a mathematical formula, equation and matrix, the computer can directly give the results without considering the intermediate calculation process. After adding the Maple plug-in that comes with the software package, symbolic operation can be directly supported. You can input mathematical formulas, symbols and equations on the computer, easily calculate the values of complex expressions in algebra, integrals, triangles and many other scientific and technological fields, and display mathematical tables and graphs. By analyzing the graphic results, we can understand the problem more vividly. In practical application, MathCAD is like a powerful calculator without complicated rules. At the same time, it can also be used well with Word processing software, so it can also be used as an excellent full-screen mathtype. The users of Mathcad are mainly aimed at users who have applied mathematics knowledge but have low requirements for computer knowledge, such as engineering researchers and students.