To establish the extreme value of a function, we'll have
to calculate the first derivative of the function.
Let's
find the first derivative of the function
f(x):
f'(x)=( x^2-2x+2)'=(x^2)'-(2x)'+(2)'
f'(x)=2x-2
Now we
have to calculate the equation of the first
derivative:
2x-2=0
We'll
divide by 2:
x-1 =
0
x=1
That means that the
function has an extreme point, for the critical value
x=1.
f(1) = 1^2 - 2*1 + 2
f(1)
= 1-2+2
We'll eliminate like
terms:
f(1) =
1
The extreme point of the function is a
minimum point whose coordinates are: (1 ; 1).
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