2.34e-03 means 2.34 * (10-3).

In some mathematical software, this e means 10, and the following +02 means the power of 10.

The mathematical software developed from the algorithm standard program was formed in the early 1970s. With the development of several major mathematical software projects, such as the NATS project in the United States, people have explored ways, methods and technologies to produce high-quality mathematical software.

After long-term accumulation, a wealth of mathematical software has emerged, covering a wide range of mathematical fields. Mathematical software in some fields, such as numerical algebra and ordinary differential equations, has been improved day by day. Important progress has also been made in other fields, such as partial differential equations and integral equations. These mathematical softwares have become powerful tools for algorithm research, scientific calculation and application software development.