The EE Command

Command Summary

The E symbol is used for entering numbers in scientific notation.

Command Syntax

mantissa E exponent

Press [2nd][EE] to paste the E command.

This command works on all calculators.

1 byte

The E symbol is used for entering numbers in scientific notation: it's short for *10^. Like TI-83 Basic, the exponent of E must be a constant integer, however unlike TiBz80 the range of values is not finite.

The E symbol is used in display by the calculator for approximations of very small numbers, or when in Sci (scientific) or Eng (engineering) mode. Interestingly, the calculator will opt to display large numbers without approximation, but it will only solve for a maximum of 12 decimal places before rounding or using E.

Unlike the exponent of E, the mantissa (a special term for the A in A*10^B, in scientific notation) isn't limited to constants alone: it can be a real or complex variable or expression, a list, a matrix, or even omitted entirely (and then it will be assumed to equal 1). The reason for this versatility is simple: internally, only the exponent is taken to be an actual argument for this command. The rest of the calculation is done through implied multiplication.

5E3
………………5000
E‾5
……………….00001

# Optimization

Don't add the mantissa when it's 1:

1E5
could be
E5

In addition, E2 or E3 can be used as shorthand ways of writing 100 and 1000 respectively. This could be continued, in theory, for higher powers of 10, but those aren't necessary as often.