To help you recall physics formulas, you can also make your own mnemonic devices. When you need help understanding a topic or formula, don't be afraid to ask your professors, tutors, friends ...

A polynomial is a type of algebraic equation that involves variables raised to a non-negative power — for example, x² + 5x + ...

Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, P. R. China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing ...