How many critical numbers are there for f(x) = (x-1)^7
a) 1
b) 5
c) 6
d) 7
I chose 1, am I correct?
Correct
f'(x) = 7 (x - 1)^6
Set to 0
7 ( x - 1)^6 = 0
(x - 1)^6 = 0
So....x = 1 is a critical number
x =1 is a critical number, but how many are there is the question.
Sorry, Julius.... I meant to say that x = 1 is the only critical number !!!
+956 
