sqrt =: %: sqrt 2 1.41421 sqrt sqrt 2 1.18921 sqrt sqrt sqrt 2 1.09051 (sqrt ^: 1) 2 1.41421 (sqrt ^: 2) 2 1.18921 (sqrt ^: 3) 2 1.09051 (sqrt ^: 10) 2 1.00068 n =: 10 sqrt ^: n 2 1.00068 (sqrt ^: _2) 2 16 (sqrt ^: _3) 2 256 square =: sqrt ^: _1 square 2 4 mean =: +/ % # mean 1 2 6 3 rms =: sqrt & mean & square rms 1 2 6 3.69685 rms 2 _2 2 _2 2 sinewave =: 1 o. 1r180p1 * i. 360 plot sinewave rms sinewave 0.707107 rms =: mean &. square rms sinewave 0.707107