3 years ago

For which rational expression is –2 an excluded value of x?

Mathematics

1 answer:

statuscvo [17]3 years ago

4 0

Answer is A
X-3/x^2-4 has two excluded values 2, -2

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Yuliya22 [10]

Answer:

3n+7=16

Step-by-step explanation:

3(3)+7=16

9+7=16

16=16

The second one is wrong(x=18)

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3 years ago

The radius of a circle is 3 miles. What is the circle's diameter?

Gemiola [76]

Answer: 6 miles

Step-by-step explanation:

The diameter is 2x the radius

2 x 3 = 6

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3 years ago

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Step-by-step explanation:

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3 years ago

Find f such that the given conditions are satisfiedf’(x)=x-4, f(2)=-1

kicyunya [14]

Given:

$f^{\prime}\left(x\right)=x-4,\text{ and}f\left(2\right)=-1$

To find:

The correct function.

Explanation:

Let us consider the function given in option D.

$f(x)=\frac{x^2}{2}-4x+5$

Differentiating with respect to x we get,

$\begin{gathered} f^{\prime}(x)=\frac{2x}{2}-4 \\ f^{\prime}(x)=x-4 \end{gathered}$

Substituting x = 2 in the function f(x), we get

$\begin{gathered} f(2)=\frac{2^2}{2}-4(2)+5 \\ =2-8+5 \\ =-6+5 \\ f(2)=-1 \end{gathered}$

Therefore, the given conditions are satisfied.

So, the function is,

$f(x)=\frac{x^{2}}{2}-4x+5$

Final answer: Option D

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2 years ago

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strojnjashka [21]

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