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Olegator [25]
3 years ago
7

What are the coordinates of the turning point for the function f(x) = (x - 1)3 - 3? A. (-1, -3)

Mathematics
2 answers:
Aliun [14]3 years ago
7 0

Answer:  C. (1, -3)

Step-by-step explanation:

Given function,

f(x) = (x - 1)^3 - 3   -------(1)

By differentiating the above equation with respect to x,

f'(x) = 3(x - 1)^2 - 0

f'(x) = 3(x - 1)^2

At the turning point of the function f(x),

f'(x) = 0

⇒ 3(x - 1)^2 = 0

⇒  (x - 1)^2 = 0

⇒ x - 1 = 0

⇒ x = 1

By substituting this value in equation (1),

We get,

f(x) = - 3

Hence, the turning point of the function f(x) is (1,-3).

⇒ Option C is correct.

Naddik [55]3 years ago
6 0
ANSWER

The turning point is

(1,-3).


EXPLANATION


The function given to us is

f(x) = (x - 1) ^{3}  - 3

At turning point,
f  '(x) = 0

So we need to differentiate the given function and equate it to zero.



We using the chain rule of differentiation, we obtain,
f '(x) =3 (x - 1) ^{2}

We equate this to zero to obtain,




3 (x - 1) ^{2}   = 0



We divide through by 3.


(x - 1) ^{2}   = 0

We solve for x to get,

x - 1 = 0


x = 1


We substitute this x-value in to the function to obtain the corresponding y-value of the turning point.





f(1) = (1- 1) ^{3}  - 3




f(1) = 0 - 3


f(1) = - 3

Therefore the turning point is


(1,-3)

C is the correct answer.
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