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Shtirlitz [24]
3 years ago
11

Given that the values in the table represent the graph of a continuous function, y has at least how many zeros?

Mathematics
1 answer:
garri49 [273]3 years ago
7 0
Line segments joining these points cross the x-axis 5 times. The continuous function y has
  at least 5 zeros.

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according to the fundamental theorem of algebra how many roots exits for the polynomial function. f(x)=8x^7-x^5+x^3+6
algol13

Answer:

The Fundamental Theorem of Algebra (FTOA) tells us that any non-zero polynomial in one variable with complex (possibly real) coefficients has a complex zero.

A straightforward corollary, often stated as part of the FTOA is that a polynomial in a single variable of degree  

n

>

0

with complex (possibly real) coefficients has exactly  

n

complex (possibly real) zeros, counting multiplicity.

To see that the corollary follows, note that if  

f

(

x

)

is a polynomial of degree  

n

>

0

and  

f

(

a

)

=

0

, then  

(

x

−

a

)

is a factor of  

f

(

x

)

and  

f

(

x

)

x

−

a

is a polynomial of degree  

n

−

1

. So repeatedly applying the FTOA, we find that  

f

(

x

)

has exactly  

n

complex zeros counting multiplicity.

Discriminants

If you want to know how many real roots a polynomial with real coefficients has, then you might like to look at the discriminant - especially if the polynomial is a quadratic or cubic. Ths discriminant gives less information for polynomials of higher degree.

The discriminant of a quadratic  

a

x

2

+

b

x

+

c

is given by the formula:

Δ

=

b

2

−

4

a

c

Then:

Δ

>

0

indicates that the quadratic has two distinct real zeros.

Δ

=

0

indicates that the quadratic has one real zero of multiplicity two (i.e. a repeated zero).

Δ

<

0

indicates that the quadratic has no real zeros. It has a complex conjugate pair of non-real zeros.

The discriminant of a cubic  

a

x

3

+

b

x

2

+

c

x

+

d

is given by the formula:

Δ

=

b

2

c

2

−

4

a

c

3

−

4

b

3

d

−

27

a

2

d

2

+

18

a

b

c

d

Then:

Δ

>

0

indicates that the cubic has three distinct real zeros.

Δ

=

0

indicates that the cubic has either one real zero of multiplicity  

3

or one real zero of multiplicity  

2

and another real zero.

Δ

<

0

indicates that the cubic has one real zero and a complex conjugate pair of non-real zeros.

Step-by-step explanation:


3 0
3 years ago
Josh created a pattteren .20 tiles were blue . For the rest of the patteten he used equal numbers of red and white tiles . 40 pe
uranmaximum [27]
Can you please mark me brainlist
7 0
3 years ago
A theater wants to build movable steps that they can use to go on and off the stage. They want the steps to have enough space in
earnstyle [38]

Answer:

0.045

Step-by-step explanation:

khan

8 0
3 years ago
AActiveWhich is the graph of g(x)=[²]* - 2²(0,2.25)2--2Mark this and return2 3Save and Exit56NextSubmit
bogdanovich [222]

SOLUTION

Given the question in the image, the following are the solution steps to answer the question.

STEP 1: Write the given function

g(x)=(\frac{2}{3})^x-2

STEP 2: Plot the given function

STEP 3: choose the correct graph

It can be seen from the plotted graph in step 2 that:

\begin{gathered} x-intercept:(-1.71,0) \\ y-intercept:(0,-1) \end{gathered}

Hence, comparing the x-intercepts, the correct graph is seen in:

3 0
1 year ago
The mean price of a new laptop computer from Store #1 is $799.99, and they only sell two brands of computers. The mean price of
Sati [7]
<span>                                                     value
Weighted mean average = ---------------------------
                                              number of brands


value = mean price of computers from Store #1 * number of brands from store #1 + mean price of computers from store #2 * number of brands from store #2

value =  $799.99 * 2 +  $679.99 * 4 = $4,319.94

number of brands = 2 + 4 = 6

weighted average = $4,319.94 / 6 = $ 719.99

Answer: option b. $719.99
</span>
6 0
2 years ago
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