The FX-300w Plus calculator features a two-line display and supports complex number calculations, algebra, calculus, and 18 levels of parentheses. Always powered up, it's just as useful in a household or office for all your calculating needs, from finances to converting cooking measurements, and for anything else you can think of when you wish you had a calculator at hand. The large, readable two-line display exhibits 10 digits, shows the problem as you write it, and then shows the answer alongside, permitting better tracking of your equation-solving process. With the Casio FX-300w, if you make an input error, you can quickly clear it with the backspace key. Tap the auto replay function to check your last equation. You can also use 229 built-in mathematics functions, enter fractions, raise y to the x power, figure standard deviations, process degree/radian/grad conversions, calculate sine, cosine, tangent, and inverse, and compute permutations and combinations. Plus, call upon the FX-300w's basic scientific, exponential, and trigonometric functions for everything you need to complete your assignments and lab work. Key in and program formulas to save for future uses. The FX-300w provides one independent and six constant memory keys. It has an efficient key layout, making this an easy-to-use basic scientific calculator, offering all the functions you'll need in a solidly constructed unit. And solar power means never replacing batteries; the backup battery assures you'll always have power when you need it.