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igor_vitrenko [27]
4 years ago
6

Which of the graphs below represent the function f(x) = x3 - 5x2 + 2x + 8? You may sketch the graph to compare.

Mathematics
2 answers:
coldgirl [10]4 years ago
8 0

Answer:

II graph is correct

Step-by-step explanation:

Given are 4 graphs and we have to find out the match for

f(x) = x^3 - 5x^2 + 2x + 8

To find y intercept:

Put x=0

y intercept = 8.  The second graph has this intercept

To find x intercept

Let f(x) =0 to get y intercepts

The given funciton has factors as

(x+2)(x-1)(x-3)

So x intercepts are -2, 1, 3 and this matches with II graph

Increasing:

f'(x) = 3x^2-10x+2\\

f'(x) =0 for x =0.214 and 3.12

OUr II graph has critical points at these values

SO option II is right

vitfil [10]4 years ago
5 0

Answer:

The answer in the attached figure

Step-by-step explanation:

we have

f(x)=x^{3}-5x^{2} +2x+8

we know that

The y-intercept is the value of the function when the value of x is equal to zero

The x-intercept is the value of x when the value of the function is equal to zero

Using a graphing tool-------> Find the  intercepts of the function

see the attached figure

The y-intercept is 8

The x-intercepts are -1,2,4

therefore

the answer in the attached figure


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