CHSLO fx-991ES PLUS Scientific Calculator with Graphic Functions for Business Study Accessories Supplies Calculator

1. Routine Calculation:

• 1) Arithmetic calculation

• 2) Fraction calculation/percentage calculation/rational calculation, etc.

• 3) Degree minutes and seconds calculation

• 4) Variable calculation (using CALC)

• 5) Equation solution (using SOLVE)

• 6) Calculation of various functions (trigonometric/inverse trigonometric function hyperbolic/inverse hyperbolic function exponential/logarithmic function power function/power root function integral/differential calculation sum calculation)

• 7) Other calculations (factorial absolute value random number permutation and combination rounding function)

2. Complex Calculation:

• 1) Addition, subtraction, multiplication and division of complex numbers

• 2) Calculation of auxiliary angle and mode

• 3) Calculation of reciprocal, square and cubic of complex numbers

• 4) Calculation of conjugate complex numbers 

3. Statistical Calculation:

• 1) 1-VAR single variable

• 2) A+BX linear regression

• 3) _＋CX2 quadratic regression

• 4) ln X logarithmic regression

• 5) e∧X e index regression

• 6) A•B∧X ab index regression

4. Decimal Conversion (base calculation):

• 1) DEC decimal

• 2) HEX hex

• 3) BIN binary

• 4) OCT octal

5. Equation Calculation:

• 1) an X+bnY=Cn linear equation with two unknowns

• 2) anX2+bnY+cnZ=dn linear equation with three unknowns

• 3) aX2+bX+c=0 quadratic equation

• 4) aX3＋bX2+cX+d=0 cubic equation

6. Matrix Calculation:

• 1) Addition of calculation matrix, scalar multiplication, multiplication, square, cubic

• 2) Determinant, shift, and inverse matrix of the calculation matrix

• 3) Calculate the modulus of each element of the matrix

• 7. Function Table Calculation:

• 1) Calculation of matrix replication, addition, scalar multiplication, multiplication, square, cubic

• 2) Determinant, shift, and inverse matrix of the calculation matrix

• 3) Calculate the modulus of each element of the matrix

8. Vector Calculation:

• 1) Calculate vector replication, vector addition, scalar multiplication, and vector dot product

• 2) Calculate the modulus of the vector