This is a long overdue release with mainly bug fixes such as the following:

  • Sometimes parts of a graph became invisible (especially sqrt and ln functions). These are fixed now.
  • There were rounding issues with certain kind of numeric computations. One example is 10.02-10.01. It produced a slightly off value (0.00999…) as Java’s builtin arithmetic operations are not accurate enough. Now the results are rounded and the output is the correct value.

The release also has a new feature – double factorials. Double factorials (wikipedia) are like factorials but only multiply odd/even numbers. Examples: 6!!=2*4*6=48 or 5!!=1*3*5=15

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