Here are some usages of the Casio Calculator 991 ES Plus ¹ ² ³:
- Basic arithmetic operations: Perform addition, subtraction, multiplication, and division.
- Fraction calculations: Perform calculations with fractions.
- Statistical operations: Perform statistical calculations like standard deviation and regression.
- Matrix calculations: Perform matrix calculations and solve simultaneous equations.
- Trigonometric calculations: Calculate sin, cos, tan and their inverse.
- Logarithmic calculations: Calculate logarithmic functions and natural logarithm base e.
- Hyperbolic calculations: Calculate hyperbolic, inverse hyperbolic functions and hyperbolic angles.
- Angle conversion: Convert between different angle units like degrees, minutes, seconds and radians.
- Exponential calculations: Calculate powers, roots, exponential functions and exponentials.
- Complex number calculations: Calculate complex numbers.
- Base-n calculations: Perform calculations using decimal, hexadecimal, binary and/or octal values.
- Integration calculations: Calculate integrals.
- Differential calculations: Calculate derivatives.
- Vector calculations: Perform vector calculations.
- Inequality calculations: Solve inequalities.