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Kazeer [188]
3 years ago
13

A polynomial function has a root of -4 with multiplicity 4, a root of -1 with multiplicity 3, and a root of 5 with multiplicity

6. If
the function has a positive leading coefficient and is of odd degree, which could be the graph of the function?
a
8
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4
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Mark this and retum
Mathematics
1 answer:
Ostrovityanka [42]3 years ago
5 0

Using the Factor Theorem, the polynomial is given by: f(x) = (x + 4)^4(x + 1)^3(x - 6)^6

  • The graph is sketched at the end of the answer.

The <em>Factor Theorem</em> states that a polynomial function with roots x_1, x_2, \cdots, x_n is given by:

f(x) = a(x - x_1)(x - x_2) \cdots (x - x_n)

In which a is the leading coefficient.

In this problem, the roots are:

  • Root of -4 with multiplicity 4, hence x_1 = x_2 = x_3 + x_4 = -4.
  • Root of -1 with multiplicity 3, hence x_5 = x_6 = x_7 = 3.
  • Root of 5 with multiplicity 6, hence x_8 = x_9 = x_10 = x_11 = x_12 = x_13 = 6

Then:

f(x) = a(x - (-4))^4(x - (-1))^3(x-6)^6

f(x) = a(x + 4)^4(x + 1)^3(x - 6)^6

  • Positive leading coefficient, hence a = 1.
  • 13th degree, so it is odd.

Then:

f(x) = (x + 4)^4(x + 1)^3(x - 6)^6

At the end of the answer, an sketch of the graph is given.

For more on the Factor Theorem, you can check brainly.com/question/24380382

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In this case, the force applied must counter the force of gravity on Martha, which is given by F_g=mg, where m = Martha's mass and g = gravitational constant 9.8 m/s/s. Therefore, F_g=75\cdot 9.8=735\text{ N}. Since she raises her body 4.0 meters, the work done must be W=Fd=735\cdot 4=2940\text{ J}.

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