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Questions: Algebra BusinessCalculus

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Calculus
Applications of Derivatives
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Find the value of \(\displaystyle c\) for \(\displaystyle f(x)=- 3 x^{2} - 3 x + 4\) that satisfies the Mean Value Theorem on \(\displaystyle [-10, 0]\).


The slope of the secant line is \(\displaystyle m = \frac{f(0) -f(-10)}{0-(-10)}=27\). Setting the derivative equal to the slope of the secant line gives the equation \(\displaystyle 27 = - 6 x - 3\). The solution is \(\displaystyle c = -5\).

Download \(\LaTeX\)

\begin{question}Find the value of $c$ for $f(x)=- 3 x^{2} - 3 x + 4$ that satisfies the Mean Value Theorem on $[-10, 0]$. 
    \soln{9cm}{The slope of the secant line is $m = \frac{f(0) -f(-10)}{0-(-10)}=27$. Setting the derivative equal to the slope of the secant line gives the equation $27 = - 6 x - 3$. The solution is $c = -5$. }

\end{question}

Download Question and Solution Environment\(\LaTeX\)
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HTML for Canvas
<p> <p>Find the value of  <img class="equation_image" title=" \displaystyle c " src="/equation_images/%20%5Cdisplaystyle%20c%20" alt="LaTeX:  \displaystyle c " data-equation-content=" \displaystyle c " />  for  <img class="equation_image" title=" \displaystyle f(x)=- 3 x^{2} - 3 x + 4 " src="/equation_images/%20%5Cdisplaystyle%20f%28x%29%3D-%203%20x%5E%7B2%7D%20-%203%20x%20%2B%204%20" alt="LaTeX:  \displaystyle f(x)=- 3 x^{2} - 3 x + 4 " data-equation-content=" \displaystyle f(x)=- 3 x^{2} - 3 x + 4 " />  that satisfies the Mean Value Theorem on  <img class="equation_image" title=" \displaystyle [-10, 0] " src="/equation_images/%20%5Cdisplaystyle%20%5B-10%2C%200%5D%20" alt="LaTeX:  \displaystyle [-10, 0] " data-equation-content=" \displaystyle [-10, 0] " /> . </p> </p>
HTML for Canvas
<p> <p>The slope of the secant line is  <img class="equation_image" title=" \displaystyle m = \frac{f(0) -f(-10)}{0-(-10)}=27 " src="/equation_images/%20%5Cdisplaystyle%20m%20%3D%20%5Cfrac%7Bf%280%29%20-f%28-10%29%7D%7B0-%28-10%29%7D%3D27%20" alt="LaTeX:  \displaystyle m = \frac{f(0) -f(-10)}{0-(-10)}=27 " data-equation-content=" \displaystyle m = \frac{f(0) -f(-10)}{0-(-10)}=27 " /> . Setting the derivative equal to the slope of the secant line gives the equation  <img class="equation_image" title=" \displaystyle 27 = - 6 x - 3 " src="/equation_images/%20%5Cdisplaystyle%2027%20%3D%20-%206%20x%20-%203%20" alt="LaTeX:  \displaystyle 27 = - 6 x - 3 " data-equation-content=" \displaystyle 27 = - 6 x - 3 " /> . The solution is  <img class="equation_image" title=" \displaystyle c = -5 " src="/equation_images/%20%5Cdisplaystyle%20c%20%3D%20-5%20" alt="LaTeX:  \displaystyle c = -5 " data-equation-content=" \displaystyle c = -5 " /> . </p> </p>