I came across this trick to find n th root of any number on a calculator that does not have nth root function or logs !! problem is I can't figure out why it works ...
To find : nth root of x.
take sqrt of 'x' 12 times. (i.e. take sqrt (x) then again take sqrt (x) ... 12 times)
subtract 1 from this ans.
divide by 'n'.
square the result 12 times...
Any idea why i get the correct answer ?