SCIENTIFIC CALCULATOR BOOKEY: 991 ES PLUS

• Random integers
• Fraction calculations 
• Algebra function
• Combination and permutation
• Statistics (List-based STAT data editor,
• standard deviation, regression analysis)
• 9 variables
• Table function

• Comes with new slide-on hard case
• Equation calculations

• Integration/differential calculations

• Matrix calculations
• Vector calculations
• Complex number calculations
• CALC function
• SOLVE function
• Base-n calculation
• Logical operations
• Engineering symbol calculations
• 40 scientific calculations
• Suitable for students studying
general math and science, prealgebra,
algebra, geometry, trigonometry,
statistics, biology, and chemistry.
Teachers, engineers, etc.