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Digiron [165]
3 years ago
14

Find all relative extrema of the function. use the second derivative test where applicable. (if an answer does not exist, enter

dne.) f(x) = x2 + 3x − 1

Mathematics
1 answer:
Alinara [238K]3 years ago
7 0
The given quadratic describes a parabola that opens upward. Its one absolute extreme is a minimum that is found at x = -3/2. The value of the function there is
  (-3/2 +3)(-3/2) -1 = -13/4

The one relative extreme is a minimum at (-1.5, -3.25).

_____
For the parabola described by ax² +bx +c, the vertex (extreme) is found where
  x = -b/(2a)
Here, that is x=-3/(2·1) = -3/2.

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Answer:

x=3

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BC=6

cos(60)=×÷6

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What is 6x to the third power?
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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ivolga24 [154]
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Your family goes to a Southern-style restaurant for dinner. There are 7 people in your family. Some order the chicken dinner for
butalik [34]

Answer:

a) 4 people ordered streak dinner

b) 3 people ordered chicken dinner

Step-by-step explanation:

Let the number of people that ordered steak dinner be x

and the number of people that ordered chicken dinner be y

From the question,

There are 7 people in your family

Hence, we can write that

x + y = 7 ...... (1)

Also from the question

Some order the chicken dinner for $13 and some order the steak dinner for $18 and the total bill was $111.

We can then write that

13y + 18x = 111 ...... (2)

From equation (1)

x + y = 7

Then,

x = 7 - y ...... (3)

Put this into equation (2)

13y + 18x = 111

13y + 18(7 - y) = 111

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-5y = -15

5y = 15

y = 15 / 5

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Put the value of y into equation (3) to get x

x = 7 - y

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x = 4

Hence, 4 people ordered streak dinner

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b) 3 people ordered chicken dinner

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