document.write( "Question 566824: What are all the values of K for which the integral from x=2 to x=k of x^2 dx = 0?\r
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Algebra.Com's Answer #366369 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! The entire graph of y = x^2 is above the x-axis (excluding x = 0). So this means that the integral of x^2 from x = 2 to x = k will be some positive number if k is not equal to 2. This is because there is always an area under the curve (if k does not equal 2)\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The only way for the integral to be zero is if k = 2. So basically, you're integrating from x = 2 to x = 2. Visually, this is a vertical line at x = 2 (between the curve x^2 and the x axis) and it has no area \n" ); document.write( " |