Scientific CalculatorKeyboard & numpad ready

CalculatorRAD · AUTOM: 0

Ready0

Calculator workspace

Tool

Graph

Function, parametric, polar, and sequence modes.

Table

Values for enabled expressions.

StartStepRows

Analyze

Available in Function mode.

ToolFunctionSecondLeftRightx

Choose a tool.

Statistics

Lists, descriptive statistics, 11 regression models, plots, tests, and intervals.

Lists L1–L6

Separate values with commas, spaces, or new lines.

One-variable statistics

Data listFrequency

Choose a list.

Two-variable and regression

X listY listRegressionStore to

Choose paired lists.

Statistical tests and confidence intervals

Choose a procedure and enter summary values.

Procedure

Enter values.

Tools

Choose a tool. Its controls open in the centered calculator workspace.

Solve

Equations, polynomials, systems, and matrices

Probability & Data

Counting, distributions, statistics, and conversions

•••

Utilities

Finance, programs, settings, and help

Equation and polynomial solvers

Numeric equation solver

Expression = 0

VariableGuessLeftRight

Polynomial root finder

Coefficients, highest degree first

2–3 variable systems

Number of variables

Advanced: paste augmented matrix

One equation per row; constant last

Enter each equation using the labeled coefficient boxes.

Matrices [A]–[J]

Matrix AOperationMatrix BPower n

Selected matrix dataResult

Probability and distributions

Combinations and permutations

Enter n on the left and r on the right.

Calculator keys: type n → press nCr or nPr → type r → press =.

Choose nCr or nPr.

Probability rules

Complement, union, intersection, and conditional probability.

P(A)P(B)P(A and B)

Enter probabilities from 0 to 1.

Discrete random variable

Enter matching values and probabilities to calculate expected value and spread.

Values xProbabilities P(x)

Probabilities must total 1.

Random simulation

Generate uniform integers, normal values, or binomial outcomes.

SimulationCountParameter 1Parameter 2

Parameter 1 = lower integer; Parameter 2 = upper integer.

No sample generated.

Probability distributions

PDF, CDF, inverse, and cumulative calculations.

Distribution

Choose a distribution.

Finance

NI% annualPVPMTFVP/YSolve for Payment at beginning

Cash flowsDiscount rate %

Programs

ProgramName

Supported commands: assignments, PRINT/DISP, INPUT/PROMPT, IF/THEN/ELSE/END, FOR, WHILE, REPEAT, GOTO/LABEL, PAUSE, STOP.

Settings, data, and keyboard

Precision

Import data

Numpad 0–9: Digits
Numpad + − × ÷: Operators
Numpad Enter / Enter: Calculate
Delete / Escape: Clear
Backspace: Delete character
F1–F4: Calculator, Graph, Stats, Tools
Ctrl+L: Clear history
Ctrl+Shift+C: Open Catalog

GraphCore is original software and does not include TI firmware, ROMs, ASM compatibility, physical link-port features, or proprietary applications.

Version 1.9.3 · MTBcustoms

FREE ONLINE CALCULATOR WORKSPACE

Scientific, graphing, probability, statistics, and solver tools in one calculator

GraphCore by MTBcustoms is a browser-based calculator for students, teachers, and independent learners. The calculator opens first, while graphing, probability, statistics, matrices, polynomial roots, systems of equations, unit conversions, finance, and programs remain available in the same workspace.

Scientific CalculatorFractions, trigonometry, logarithms, complex numbers, variables, and memory Graphing CalculatorFunctions, parametric, polar, sequence, trace, tables, roots, and integrals Probability CalculatornCr, nPr, probability rules, simulations, and major distributions Statistics CalculatorLists, regressions, plots, hypothesis tests, confidence intervals, and ANOVA Polynomial SolverFind real and complex roots from degree 1 through degree 10 Systems of EquationsSolve two- and three-variable simultaneous linear equations Matrix CalculatorDeterminants, inverses, products, RREF, powers, and augmented systems Unit ConverterUnits, angles, number bases, fractions, scientific notation, and engineering notation

About GraphCore

Does GraphCore work on phones?

Yes. The mobile view emphasizes the on-screen calculator keypad and keeps supporting tools inside focused workspaces and compact drawers.

Can GraphCore work offline?

Yes. After the progressive web app is installed or cached, the core calculator can operate without an internet connection.

Is GraphCore a Texas Instruments emulator?

No. GraphCore is original software by MTBcustoms. It does not include TI firmware, ROMs, proprietary applications, or copied calculator trade dress.