Its unclear to me which type of plots you are actually looking for - Google translate did not really help to find out what "two yuan quadratic equation graphics" actually means. So it would be better if you provide some example pictures showing what you want to achieve.
If you are looking for something like pie charts, then you are using the wrong software, I fear. While its possible to create pie charts using some programming (examples were posted here in the forum from time to time) , the easy of use and quality in no way would compare to a spreadsheet program.
Werner
. "Binary quadratic equation". Google translate does not do a great job with Chinese. Neither does Bing translate. So using both is often the best approach.
