Examples of Math Notation with calcPad

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 the RIGHT ARROW key
  2. Type x^2 and press the RIGHT ARROW key
  3. Type +4x+2

1 2 x 2 + 4 x + 2

A simple inequality

Type x>=-4

x -4

A square root

Type sqrt(x

x

A cube root

  1. Click Functions > nth root button
  2. Type 3 and press the RIGHT ARROW key
  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

Type either of the following:

ln(|x|)
ln(abs(x))

ln x

A complex number

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

2 + 3 i

A vector in vector bracket form

  1. Click Vectors > vector brackets button
  2. Type 12, 15, 22

12 15 22

A vector in i-j-k form

  1. Type 5
  2. Click Vectors > i button
  3. Type +24
  4. Click Vectors > j button
  5. Type +4
  6. Click Vectors > k button

5 i + 24 j + 4 k