Quick Help

  1. Basics
  2. Keyboard
  3. Expressions
  4. Algebra

1. Basics

Enter expression into input field. Result is shown below as you type.
Touch input field to display cursor handle. Move it to edit parts of the expression.
Use delete buttons to delete characters.
Press enter to add more expressions. One expression per line.
Touch result area and slide finger to move it if result does not fit on the screen. Pinch to zoom in and out.
Touch result to select another expression and edit it.
Press top-right delete button to clear input field. Press and hold to clear all input.

2. Keyboard

Some keyboard keys will show a popup with extra options after delay. Hold a key until popup is displayed.
Slide finger left or right to select different entries.
Slide farther to the side to cancel.
Tap same key repeatedly to cycle through available entries.

3. Expressions

  1. Fractions
  2. Division
  3. Complex numbers
  4. Absolute value
  5. Factorial
  6. Power
  7. Variables

Fractions

Enter fractions using / key. Use space to enter mixed numbers.

Division

Hold / key to enter division symbol. This will only change display of expression, results will be same as for fraction.

Complex numbers

Most functions support complex numbers as arguments.

Absolute value

Absolute value or modulus. Computed as distance from 0 for complex numbers.

Factorial

Computes factorial for up to 1000! with all digits.

Power

Integer powers for up to 1000 with all digits. Non-integer powers computed with double precision.

Variables

Using variables for intermediate results.

4. Algebra

  1. Linear equations
  2. Quadratic equations
  3. Higher degree polynomial equations
  4. Polynomial factoring
  5. Polynomial expansion
  6. Polynomial division

Linear equations

System of linear equations, enter one equation per line.

Quadratic equations

Quadratic equation, don't forget to add =0 to make it equation.

Higher degree polynomial equations

Approximate roots for higher degree polynomials, including all complex roots.

Polynomial factoring

Pairs of complex roots combined into second degree factors.

Polynomial expansion

Polynomial division

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