The Texas Instruments 36 X is specifically designed for a wide range of mathematical calculations, from entry-level high school math to college level calculus. With an ergonomic shape for comfort during long hours of study or work, the Texas Instruments 36 X can be easily tucked into any backpack or bag for travel. This solar-powered calculator features a 10-character by one-line display for easy reading and fast calculations. The Texas Instruments scientific calculator supports Boolean logic operations, fractions, and other common functions. This calculator is ideal for general mathematics, trigonometry, and statistics. The Texas Instruments 36 X is designed to help users calculate radians, degrees, and grads quickly. The Texas Instruments scientific calculator supports one and two variable expressions and four pending operations. Users can easily find numbers and functions quickly with conveniently color-coded buttons and an easy to use keyboard layout. A sliding cover is also available for this solar-powered calculator to keep the keyboard and screen safe when not in use.