Examples of Math Notation with mathPad

The following examples illustrate entry of some common expressions.

Expression

Do this

To display this

A simple expression with integers

Type 2x+52500

2 x + 52500

A polynomial with a fractional coefficient

  1. Type 1/2 and press
  2. Type x^2 and press
  3. Type +4x+2

1 2 x 2 + 4 x + 2

A simple inequality

Type x>=-4

x -4

Set notation with fractions

  1. Type (1/9 and press
  2. Type ,2/7 and press
  3. Type ,3/5
1 9 2 7 3 5

A square root

  1. Type sqrt

    The square root symbol is created.

  2. Type x

x

A cube root

  1. Click Functions > nth root button
  2. Type 3 and press
  3. Type x

x 3

An expression involving pi and Euler's number

  1. Type pi+
  2. Click Functions > Euler's number button
  3. Type 2

π + e 2

The natural logarithm of an absolute value

  1. Type ln

    A set of parentheses is automatically added and your insertion point is put in the parentheses.

  2. Type |x

    The closing vertical bar is automatically added.

ln x

An inverse sine

  1. Type sin

    A set of parentheses is automatically added and your insertion point is put in the parentheses.

  2. Press and type ^-1
  3. Press and type x

Although you could type arcsin or use the tool button, this example illustrates how you can enter certain functions using the keyboard alone.

sin-1x

A complex number

  1. Type 2+3
  2. Click Symbols > imaginary unit button

2 + 3 i