Features:
- Stable product quality and sensitive response.
- Soft touch keyboard, not easily stuck keys.
- The large display screen and symmetrical ergonomic design allow numbers to be mastered with one hand.
- 417 Functions: Display Mathematical functions in textbook format.
Specification:
- Material: ABS
- Size: 80*11*162mm
- Adapted Battery: Button Battery
Functions:
- 1. routine Calculation
- 1) arithmetic calculation
- 2) Score calculation/percentage calculation/rational number calculation, etc.
- 3) Degree, minute, second calculation
- 4) Variable calculation (use CALC)
- 5) Equation solution (use SOLVE)
- 6) Calculation of various functions (trigonometric/anti-trigonometric function, hyperbolic/inverse hyperbolicfunction, exponent/logarithmic function, power function/power square root function, integral/differentialcalculation, calculus summatorius).
- 7) Other calculations (factorial, absolute value, random number, permutations and combinations, roundingfunction).
2. Plural Computing
- 1) The addition, subtraction, multiplication, and division of plural
- 2) Calculation of auxiliary Angle and model
- 3) The inverse, square, and cubic of plural
- 4) The calculation of complex conjugate numbers
3. Statistical Calculation
- 1) single variable
- 2) linear regression
- 3) quadratic regression
- 4) logarithmic regression
- 5) e exponential regression
- 6) ab exponential regression
4. Number Systems Converter (radix calculation)
- 1) DEC decimalism
- 2) HEX hexadecimal
- 3) BIN binary system
- 4) OCT octonary number system
5. Equation Calculation
- 1) One equation with two unknowns
- 2) One equation with three unknowns
- 3) Quadratic
- 4) Cubic Equation
6. Matrix Calculation
- 1) Calculate matrix replication, addition, scalar multiplication, multiplication, square, and cube
- 2) Calculate the determinant, transposition and inverse matrix of the matrix
- 3) Compute the modulus of each element of the matrix
7. Vector Computation
- 1) Calculate vector replication, vector addition, scalar multiplication, vector dot product
- 2) Compute the norm of vector
Package Included:
- 1x Calculator for 991ES-PLUS
Packing Safely in Retail Box.
Notes:
- Due to the light and screen setting difference, the items color may be slightly different from the pictures.
- Please allow slight dimension difference due to different manual measurement.
