f(x) = |(x+9)(x-7)|
the function y = (x+9)(x-7) would have x-intercepts at -9 and 7 , and it would dip below the x-axis between these two values.
So the |...| flips that part above the x-axis, causing CUSPS at x =-9 and x=7
the derivative does not exist for those two values.
Suppose f(x)= |x^(2)+2x−63|.
Where is f(x) not differentiable?
2 answers
Hmm, DNE was incorrect.