CPM Homework Help : CALC Problem 5-106

Use your derivative tools to find the second derivative, $\frac { d ^ { 2 } y } { d x ^ { 2 } }$ , of each function below.

$y = \sqrt { \frac { 1 } { x } }$
Hint (c):
You could use the quotient rule AND the chain rule...Or you could rewrite $y$ as with exponents and quickly use the Power Rule!

$y = | x - 2 |$
Hint (d):
Rewrite $y$ as a piecewise function. The derivative will be a piecewise function as well. So will the second derivative.