The monad i. (integers) result is the list of integers from 0 up to its right argument.
i. 2 0 1 i. 4 0 1 2 3 i. 6 0 1 2 3 4 5
The dyad $ is called shape.
5 $ 7 NB. a list of 5 7's 7 7 7 7 7 8 $ 23 NB. a list of 8 23's 23 23 23 23 23 23 23 23
The monad ? (roll) generates a random number in the range 0 up to 1 less than the argument. The answers vary depending on how the die rolls.
? 10 6 ? 10 0 ? 10 10 10 10 NB. 4 numbers in range 0 to 9 3 0 4 6 ? 5 $ 100 NB. 5 numbers in range 0 to 99 58 93 84 52 9 ? i. 5 �domain error � ?i.5
The ? i. 5 fails because the ? on 0 fails because there are no integers in the range 0 to _1 and so there is no answer for the argument of 0. If you add 1 to the result of i. we will get an answer.
? 1 + i. 20 0 1 0 1 0 3 3 2 2 4 7 3 0 13 1 5 16 6 3 19
The dyad ^ (power) result is the left argument multiplied by itself the number of times given by the right argument.
3 ^ 2 NB. 3 * 3 9 2 ^ 3 NB. 2 * 2 * 2 8 2 ^ 4 NB. 2 * 2 * 2 * 2 16 2 2 2 2 2 2 ^ 0 1 2 3 4 5 1 2 4 8 16 32 2 ^ 0 1 2 3 4 5 1 2 4 8 16 32 2 ^ i. 6 1 2 4 8 16 32
The dyad o. (circle) is the letter o inflected with a dot, and it provides the circular (trigonometric) functions. In particular, the o. verb with a left argument of 1 gives the sine of the right argument.
1 o. i.7 0 0.841471 0.909297 0.14112 _0.756802 _0.958924 _0.279415
It is hard to tell whether this makes sense or not and it would be better to see this data with a plot.