Rectangular
It converts co-ordinates from a polar form to rectangular (Cartesian) form.
It is the opposite of the Pol (or Polar) function.
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If x = 0.5555555555 rec then 10x = 5.55555555 rec Therefore through subtraction 9x = 5 As a result 0.555555 rec = 5/9 therefore root of 0.5555 rec = root 5/ root 9 Which is root5/3
better way to explain the picture one rec is standing up ont he left the other two are on there side on top of each other agaist the standing one so they make a bigger rec with all the little rectangles inside......
-3.5555556 = -35555556/10000000 = -8888889/2500000 or -31388889/2500000 However, -3.5555556 may be the rounded value of -3.555.... that is, 3.5 (recurrent) In that case, proceed as follows: Let S = -3.5 rec Then 10S = -35.5 rec Subtracting the first equation from the second gives 9S = -32 so that S = -32/9 or -35/9
One ninth (1/9) is represented in decimal notation by the number 0.111... which can also be written as 0.1(rec) or 0.1 with a small dot or horizontal line above the '1'.This can also be written as '0.' followed by any number of '1's. There is no way to write down this number in its entirety, as there are infinitely many '1's following the decimal place. This number is said as "zero point one, recurring".