document.write( "Question 1029788: Using n = 4 equal-width rectangles, approximate the integral from negative 2 to 2 of the quantity x cubed plus 8, dx. Use the right end-point of each sub-interval to determine the height of each rectangle. \n" ); document.write( "

Algebra.Com's Answer #644769 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Break up the number line starting at x=-2 with dx=1.
\n" ); document.write( " $\"x=-2%2B1=-1\"$ , $\"f%28x%29=x%5E3%2B8=%28-1%29%2B8=7\"$ , $\"A%5B1%5D=1%287%29=7\"$
\n" ); document.write( " $\"x=-1%2B1=0\"$ , $\"f%28x%29=x%5E3%2B8=%280%29%2B8=8\"$ , $\"A%5B2%5D=1%288%29=8\"$
\n" ); document.write( " $\"x=0%2B1=1\"$ , $\"f%28x%29=x%5E3%2B8=%281%29%2B8=9\"$ , $\"A%5B3%5D=1%289%29=9\"$
\n" ); document.write( " $\"x=1%2B1=2\"$ , $\"f%28x%29=x%5E3%2B8=%288%29%2B8=16\"$ , $\"A%5B4%5D=1%2816%29=16\"$
\n" ); document.write( ".
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\n" ); document.write( " $\"A=A%5B1%5D%2BA%5B2%5D%2BA%5B3%5D%2BA%5B4%5D\"$
\n" ); document.write( " $\"A=7%2B8%2B9%2B16\"$
\n" ); document.write( " $\"A=40\"$ \n" ); document.write( "

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