Scientific calculator features 401 functions that help you work through complex problems for quick, simple calculations. It differentiates and integrates, performs complex number calculations, has 40 physical constants and unit conversions. Two-variable statistical functions include standard normal distribution probabilities. Calculator covers quadratic and cubic equations, regression, base numbers, matrices and vectors. Solar-powered operation with a battery backup ensures consistent use in any setting. Protective hard case keeps the calculator safe from damage between uses.