Something for Loring

[Bill in Buena Park]

355/113 is a little closer than 22/7

[charliex]

I know that Pi is an irrational number because the cartoon says so. That may explain why I don't have a lot of real friends. I do have some (i) imaginary friends, why is that? Might it have something to do with n! ?

Chas

[Mr__Bill]

I can't speak for Loring but most of my imaginary friends are the rational ones.....






Bill

[LCHIEN]

355/113 is a little closer than 22/7

Quite good, close to 6 decimal point accuracy. 402 ppm actually. I might use this but most all my calculators have Pi buttons or I can use Pi() or 2*ACOS(0) in excel when i want accuracy.

Actually all my electronics calculations usually use 2Pi and I just use 6.28 as close enough when most resistors have 1% tolerance and capacitors have 5% tolerance.

[Mr__Bill]

Seems if you really want to be accurate you should use these guy's calculation. Personally when estimating I just use 3 or pumpkin whichever seems appropriate.




Bill

[BobSch]

Remember life is complex, it has both real and imaginary parts.

[gsmittle]

Mathemeticians (but not EEs) use the symbol i for the square root of -1, which is an "imaginary number". (EEs use j instead of i, to avoid confusion with electrical current i)

Pi is a "rational number", meaning it can be expressed as a fraction. Pi is exactly 22/7, or approximately 3.14159.....

Nothing about this explanation (or Loring's one after) is rational.

Thanks, BW, I'm needin' a friend around all these math whizzes.

g.