document.write( "Question 1193572: find the extrema of the ff. function on the given interval, if there are any. determine the values of x at which the extrema occur.
\n" );
document.write( "f(x)= x/x^2+2 on [-1,4]. \n" );
document.write( "
Algebra.Com's Answer #848552 by parmen(42)![]() ![]() ![]() You can put this solution on YOUR website! I've been improving my skills at solving these simplification problems. Let's find the extrema of the function: \n" ); document.write( "$$f(x)=\frac{x}{x^2+2}$$ \n" ); document.write( "On the interval $[-1, 4]$.\r \n" ); document.write( "\n" ); document.write( "We can find the extrema of a function by finding its critical points, which are the points where the derivative is zero or undefined.\r \n" ); document.write( "\n" ); document.write( "**Steps to solve:** \n" ); document.write( "**1. Differentiate the function:** \n" ); document.write( "$$f'(x)=\frac{2-x^2}{(x^2+2)^2}$$ \n" ); document.write( "**2. Set the derivative equal to zero and solve for x:** \n" ); document.write( "$$f'(x)=0$$ \n" ); document.write( "$$\frac{2-x^2}{(x^2+2)^2}=0$$ \n" ); document.write( "$$2-x^2=0$$ \n" ); document.write( "$$x=\pm\sqrt{2}$$ \n" ); document.write( "**3. Evaluate the function at the critical points and endpoints of the interval:** \n" ); document.write( "$$f(-1)=\frac{-1}{(-1)^2+2}=-\frac{1}{3}$$ \n" ); document.write( "$$f(\sqrt{2})=\frac{\sqrt{2}}{(\sqrt{2})^2+2}=\frac{\sqrt{2}}{4}$$ \n" ); document.write( "$$f(4)=\frac{4}{4^2+2}=\frac{2}{10}$$ \n" ); document.write( "**4. Compare the values of the function at the critical points and endpoints to determine the extrema:** \n" ); document.write( "The maximum value of the function is $\frac{\sqrt{2}}{4}$ at $x=\sqrt{2}$. \n" ); document.write( "The minimum value of the function is $-\frac{1}{3}$ at $x=-1$.\r \n" ); document.write( "\n" ); document.write( "**Answer:** \n" ); document.write( "The extrema of the function are: \n" ); document.write( "* Maximum value: $\frac{\sqrt{2}}{4}$ at $x=\sqrt{2}$ \n" ); document.write( "* Minimum value: $-\frac{1}{3}$ at $x=-1$ \n" ); document.write( " \n" ); document.write( " |