x←?1000⍴100 cmpx '-\x' -\x → 9.40E¯3 ⎕←t←{tm cmpx'-\x' ⊣ x←?⍵⍴100}¨1000×1 2 4 8 0.00928 0.0366 0.146 0.578 2 ÷⍨/ t 3.94397 3.98907 3.9589 x←?4000⍴100 cmpx '+\x×(⍴x)⍴1 ¯1' '-\x' +\x×(⍴x)⍴1 ¯1 → 0.00E0 | 0% -\x → 1.47E¯1 | +235800% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕