Saturday, February 04, 2017

A Math Teacher's Lament



I love my new watch but I wouldn't have bought it if I had looked closer.  The "9" really bothers me.  I spend hours explaining that pi is not 3.14.  Pi is an irrational number that goes on forever.  

Even

 3.141592653589793238462643383279502884197169399375105820974944592 

used above would not represent 9 exactly.


3 comments:

Jonathan said...

3π - (3π - 9)

Rita Cat said...

Except you don't need the value of pi for that. I prefer something with trig like 9sin pi/2

Jonathan said...

Integral of πdx from 0 to 9/π