Find step-by-step explanations and practice problems and solutions for Algebra and Calculus. Paul’s Online Math Notes provides very helpful tutorials and lots of sample problems to work through. The site shows step-by-step how to solve problems. It also provides links to “cheat sheets” for Algebra, Trigonometry, Calculus, Limits, Derivatives, Integrals, and Laplace Transforms. There is also a great section on ‘How to Study Math’ and ‘Common Errors in Mathematics’.
The Eformulae site is a online resource of engineering formulas, science formulas, math formulas, physics formulas, chemistry formulas, tables, glossary of terms related to computer engineering, manufacturing technology, mechanical engineering, agricultural engineering, electronics engineering, metallurgy and machining processes. This is great for referencing and for better understanding a formula and how it is used.