there's infinitely many digits in pi (that isn't just a bunch of zeroes) but you can do arithmetics with that. The same applies with 0,999....
and the square root of 2, for that matter
I do lots of mathematics with approximations of pi and root 2. I can never do a calculation using the actual value of pi or root 2 as it doesn't fit on my aging 10 digit calculator. I suspect the same is true for you.
Any number that can be expressed as a fraction (i.e. a ratio of any two positive integers) is a rational number, unlike π or √2.
Now, it might seem odd that 0.9 recurring equals 1, but the non-commutability of pq & qp is even odder still and physicists generally accept that oddity as factual.
Any number that can be expressed as a fraction (i.e. a ratio of any two positive integers) is a rational number, unlike π or √2.
Now, it might seem odd that 0.9 recurring equals 1, but the non-commutability of pq & qp is even odder still and physicists generally accept that oddity as factual.
Pi=3,1415[AND THEN SOME OTHER DIGITS THAT GO ON INDEFENETELY]
but that doesn't mean I can't use Pi
Your circle has a diameter of 4? then the circumferance is exactly 4*pi
It's invalid because I am talking about whether 0.999... or pi are legitimately decimal numbers to which we can apply arithmetic processes like multiplication in exactly the same way we use the number 7. Not whether 4x is 4x - which is algebra not decimal arithmetic.
It's invalid because I am talking about whether 0.999... or pi are legitimately decimal numbers to which we can apply arithmetic processes like multiplication in exactly the same way we use the number 7.
Thanks Lucy; I'm glad it is not an actual headache. But wait, if 0.99999... = 1, then it isn't an approximation and my headache is real!!! Or have I got that turned around? Uppi, do I have a headache?
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