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Nataly [62]
2 years ago
13

F(x) = x^2-3 What is the average rate of change on the interval [-5, 2] ?

Mathematics
1 answer:
Mumz [18]2 years ago
7 0

Answer:

(-3).

Step-by-step explanation:

Over this interval, the change in the value of this function is:

f(-5) - f(2) = 22 - 1 = 21.

The corresponding change in the value of x:

(-5) - 2 = -7.

The average rate of change of function f over this interval is equal to the change in the function value divided by the corresponding change in x:

\begin{aligned}& (\text{average rate of change}) \\ =\; & \frac{(\text{change in function value})}{(\text{change in $x$})} \\ =\; & \frac{f(-5) - f(2)}{(-5) - 2} \\ =\; & \frac{22 - 1}{-7} \\ =\; & \frac{21}{-7} \\ =\; & -3\end{aligned}.

Thus, the average rate of change of f(x) = x^{2} - 3 over the interval [-5,\, 2] would be (-3).

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Find the average value of the function over the given interval. (Round your answer to three decimal places.) f(x)
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Complete Question  

Find the average value of the function over the given interval. (Round your answer to three decimal places.) f(x) = 12e^x, [−6, 6] Find all values of x in the interval for which the function equals its average value. (Enter your answers as a comma-separated list. Round your answers to three decimal places.)

Answer:

The  average is  

  AV  =  403

The value of  x is

   x =  4

Step-by-step explanation:

From the question we are told that

  The equation is  f(t) =  12e^x

  The  points consider is  [-6 , 6]

Generally the average value of the function over the given interval is mathematically represented as

          AV  =  \frac{1}{z-w} \int\limits^ z_w {f(x)} \, dx

          AV  =  \frac{1}{ 6 - (-6)}  \int\limits^{6}_{-6} { 12e^x} \, dx

          AV  =  \frac{1}{12 } e^x| \left 6} \atop {-6}} \right.

          AV  = e^6 -e^{-6}

          AV  =  403

Generally when the function equal the average we have that

        f(x) =  12e^{x} =  403

        e^{x} =  34

          x =  ln(34)

        x =  4

         

       

3 0
3 years ago
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