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Find the derivative of
Decomposing the function gives
\begin{question}Find the derivative of $f(x) = e^{\cos{\left(x^{5} \right)}}$. \soln{9cm}{Decomposing the function gives $f(u) = e^{u}$, $u = \cos{\left(v \right)}$, and $ v = x^{5}.$ Using the chain rule $f'(x) = \frac{df}{du}\frac{du}{dv}\frac{dv}{dx}$. $f'(x) = (e^{u})(- \sin{\left(v \right)})(5 x^{4}) = - 5 x^{4} e^{u} \sin{\left(v \right)}$. Substituting back in $u$ and $v$ gives $f'(x) = - 5 x^{4} e^{\cos{\left(v \right)}} \sin{\left(v \right)} = - 5 x^{4} e^{\cos{\left(x^{5} \right)}} \sin{\left(x^{5} \right)}$. } \end{question}
\documentclass{article} \usepackage{tikz} \usepackage{amsmath} \usepackage[margin=2cm]{geometry} \usepackage{tcolorbox} \newcounter{ExamNumber} \newcounter{questioncount} \stepcounter{questioncount} \newenvironment{question}{{\noindent\bfseries Question \arabic{questioncount}.}}{\stepcounter{questioncount}} \renewcommand{\labelenumi}{{\bfseries (\alph{enumi})}} \newif\ifShowSolution \newcommand{\soln}[2]{% \ifShowSolution% \noindent\begin{tcolorbox}[colframe=blue,title=Solution]#2\end{tcolorbox}\else% \vspace{#1}% \fi% }% \newcommand{\hideifShowSolution}[1]{% \ifShowSolution% % \else% #1% \fi% }% \everymath{\displaystyle} \ShowSolutiontrue \begin{document}\begin{question}(10pts) The question goes here! \soln{9cm}{The solution goes here.} \end{question}\end{document}
<p> <p>Find the derivative of <img class="equation_image" title=" \displaystyle f(x) = e^{\cos{\left(x^{5} \right)}} " src="/equation_images/%20%5Cdisplaystyle%20f%28x%29%20%3D%20e%5E%7B%5Ccos%7B%5Cleft%28x%5E%7B5%7D%20%5Cright%29%7D%7D%20" alt="LaTeX: \displaystyle f(x) = e^{\cos{\left(x^{5} \right)}} " data-equation-content=" \displaystyle f(x) = e^{\cos{\left(x^{5} \right)}} " /> . </p> </p>
<p> <p>Decomposing the function gives <img class="equation_image" title=" \displaystyle f(u) = e^{u} " src="/equation_images/%20%5Cdisplaystyle%20f%28u%29%20%3D%20e%5E%7Bu%7D%20" alt="LaTeX: \displaystyle f(u) = e^{u} " data-equation-content=" \displaystyle f(u) = e^{u} " /> , <img class="equation_image" title=" \displaystyle u = \cos{\left(v \right)} " src="/equation_images/%20%5Cdisplaystyle%20u%20%3D%20%5Ccos%7B%5Cleft%28v%20%5Cright%29%7D%20" alt="LaTeX: \displaystyle u = \cos{\left(v \right)} " data-equation-content=" \displaystyle u = \cos{\left(v \right)} " /> , and <img class="equation_image" title=" \displaystyle v = x^{5}. " src="/equation_images/%20%5Cdisplaystyle%20%20v%20%3D%20x%5E%7B5%7D.%20" alt="LaTeX: \displaystyle v = x^{5}. " data-equation-content=" \displaystyle v = x^{5}. " /> Using the chain rule <img class="equation_image" title=" \displaystyle f'(x) = \frac{df}{du}\frac{du}{dv}\frac{dv}{dx} " src="/equation_images/%20%5Cdisplaystyle%20f%27%28x%29%20%3D%20%5Cfrac%7Bdf%7D%7Bdu%7D%5Cfrac%7Bdu%7D%7Bdv%7D%5Cfrac%7Bdv%7D%7Bdx%7D%20" alt="LaTeX: \displaystyle f'(x) = \frac{df}{du}\frac{du}{dv}\frac{dv}{dx} " data-equation-content=" \displaystyle f'(x) = \frac{df}{du}\frac{du}{dv}\frac{dv}{dx} " /> . <img class="equation_image" title=" \displaystyle f'(x) = (e^{u})(- \sin{\left(v \right)})(5 x^{4}) = - 5 x^{4} e^{u} \sin{\left(v \right)} " src="/equation_images/%20%5Cdisplaystyle%20f%27%28x%29%20%3D%20%28e%5E%7Bu%7D%29%28-%20%5Csin%7B%5Cleft%28v%20%5Cright%29%7D%29%285%20x%5E%7B4%7D%29%20%3D%20-%205%20x%5E%7B4%7D%20e%5E%7Bu%7D%20%5Csin%7B%5Cleft%28v%20%5Cright%29%7D%20" alt="LaTeX: \displaystyle f'(x) = (e^{u})(- \sin{\left(v \right)})(5 x^{4}) = - 5 x^{4} e^{u} \sin{\left(v \right)} " data-equation-content=" \displaystyle f'(x) = (e^{u})(- \sin{\left(v \right)})(5 x^{4}) = - 5 x^{4} e^{u} \sin{\left(v \right)} " /> . Substituting back in <img class="equation_image" title=" \displaystyle u " src="/equation_images/%20%5Cdisplaystyle%20u%20" alt="LaTeX: \displaystyle u " data-equation-content=" \displaystyle u " /> and <img class="equation_image" title=" \displaystyle v " src="/equation_images/%20%5Cdisplaystyle%20v%20" alt="LaTeX: \displaystyle v " data-equation-content=" \displaystyle v " /> gives <img class="equation_image" title=" \displaystyle f'(x) = - 5 x^{4} e^{\cos{\left(v \right)}} \sin{\left(v \right)} = - 5 x^{4} e^{\cos{\left(x^{5} \right)}} \sin{\left(x^{5} \right)} " src="/equation_images/%20%5Cdisplaystyle%20f%27%28x%29%20%3D%20-%205%20x%5E%7B4%7D%20e%5E%7B%5Ccos%7B%5Cleft%28v%20%5Cright%29%7D%7D%20%5Csin%7B%5Cleft%28v%20%5Cright%29%7D%20%3D%20-%205%20x%5E%7B4%7D%20e%5E%7B%5Ccos%7B%5Cleft%28x%5E%7B5%7D%20%5Cright%29%7D%7D%20%5Csin%7B%5Cleft%28x%5E%7B5%7D%20%5Cright%29%7D%20" alt="LaTeX: \displaystyle f'(x) = - 5 x^{4} e^{\cos{\left(v \right)}} \sin{\left(v \right)} = - 5 x^{4} e^{\cos{\left(x^{5} \right)}} \sin{\left(x^{5} \right)} " data-equation-content=" \displaystyle f'(x) = - 5 x^{4} e^{\cos{\left(v \right)}} \sin{\left(v \right)} = - 5 x^{4} e^{\cos{\left(x^{5} \right)}} \sin{\left(x^{5} \right)} " /> . </p> </p>