SPECIFICATIONS
Power Source: Battery
Brand Name: CTIFREE
Model Number: 991ES PLUS
Max. Digits: 12
Style: Scientific
Material: Plastic
Origin: Mainland China
Applicable Battery Type: Coin Batteries
Choice: yes
• Scientific Style :This calculator features a scientific style, perfect for complex mathematical calculations and scientific computations.
• 417 Functions :Equipped with 417 functions, this calculator can tackle a wide range of problems, making it an ideal tool for high school and university students.
• Coin Battery Powered :Powered by coin batteries, this calculator ensures long-lasting performance for all your mathematical needs.
• Plastic Material :Made from durable plastic, this calculator is designed to withstand daily use while maintaining its compact and lightweight design.
• Origin : Mainland China
• Office Coin Battery :Designed for office use, this coin battery calculator is an efficient tool for quick calculations at work.
Product features:
1. Stable product quality and sensitive response
2. Soft touch keyboard, not easily stuck keys
3. The large display screen and symmetrical ergonomic design allow numbers to be mastered with one hand
4.417 Functions: Display Mathematical functions in textbook format
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
Specification:
1.Product name: Functional Computer Science Calculator
2.Material: ABS
3. size: 80*11*162mm
4.Adapted battery: button battery
Precautions:
1. Due to different shooting angles and lighting, there may be certain colors
2. Manual measurement may result in an error of 1-2mm
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