Casio FX-570ES Plus Scientific Calculator For College.

Specifications

Key Features
417 functions
Display: Natural Textbook Display, Natural V.P.A.M.
Power supply: solar powered with an auxiliary battery 
with a hard case
Dimensions (H x W x D): 162,0 x 80,0 x 11,1 mm 
Weight: 95g

Functions:

NEW: New fraction input mode
NEW: Improved equation mode
NEW: Random integers

Repeat function
24 levels of brackets
Variable memories (6)
STO/RCL keys

Scientific functions:

Trigonometric and inverse trigonometric functions
Hyperbolic and inverse hyperbolic functions 
Exponential functions 10x, ex
Inverse function x-1
Power and root functions x√, √, x2, xy
Logarithm functions (log, ln)
Combinatoric and permutations
Random number generator
Converts between polar coordinates and rectangular coordinates
Calculates with fractions (two modes) 
Converts between sexagesimal and decimal 
Calculates in gradian, degree and radian measure
π key, e key and % key
SCI/FIX

Statistics:

• Lists of based statistics 
• Statistics with a variable 
• standard deviation 
• Statistics with two variables 
• Linear
• Exponential
• abExponential
• Logarithmic 
• Power
• Inverse 
• Quadratic
• Solve/Calc
• Numeric integration
• Numeric differentiation 
• ∑()-function
• calculates with complex numbers 
• a+bi /r∠θ
• Calculations on the basis of n
• Logical calculations.  

Equations:

• Linear systems of equations
• Polynomial equations
• Linear systems of equations
• Polynomial equations
• Matrix
• Determinants
• Inverse matrix
• Vector
• internal product 
• external product 
• physical constants 
• metric conversion.

Normal entry

• Fractions
• Roots
• Powers
• Parentheses 
• Amounts 
• Numeric differentiation/integration 
• Totals 
• Non-natural input (such as the MS models)
• Output in √-form
• Output in π-form
• Functions table

1. Casio fx 570es plus.
2. Instructions.