10.1.notebook
10.1
September 27, 2016
Roots (of various kinds)
means
...sorta...
Compare:
Definition:
vs.
=
=
is the principal square root of x.
Weird side­effect of this:
Try some numbers for x, and watch what happens...
So, actually, 1
10.1.notebook
September 27, 2016
Cube roots:
Key example:
So, Simplifying:
"Assume all variables represent positive quantities."
2