Casio FX-991EX Engineering/Scientific Calculator/ Black<br /><br />High Resolution Display to view more data like spreadsheets &amp; 4x4 matrix calculations<br />Natural Text book display - symbols and numbers appear just as they do in textbook<br />Numeric Integration/Differentiation<br />Simultaneous and Polynomial Solver<br />Solar Powered with Battery Backup (LR44 Button Cell Battery Included)<br /><br /><br />Product Description<br />A high performance scientific calculator with high resolution display increasing the amount of information displayed and super fast calculation speed for testing or performing the most advance mathematics. High resolution LCD screen allows viewing of more information like spreadsheets and 4x4 matrix calculations. This calculator has a comprehensive set of advanced calculations for integration &amp; differential calculus/ along with vector and inequality calculations. For middle school/ high school and college math courses.<br /><br />Product Dimensions 9.1 x 5.6 x 1.1 inches<br />Item Weight 6.4 ounces<br />Shipping Weight 7.2 ounces<br />ASIN B00ZZ93346<br />Item model number FX-991EX<br />Batteries 1 LR44 batteries required. (included)<br /><br />