document.write( "Question 711165: Hello,\r
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document.write( "I need to see how to solve the following problem. i have several of these I need to complete and the solution to this would help me greatly!\r
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document.write( "Locate the stationary point(s) on the following curve and determine whether it is (they are) a minimum or maximum point(s):
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document.write( "y = 3x^2 – 6x.\r
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document.write( "Many thanks in advance.
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document.write( "Mike \n" );
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Algebra.Com's Answer #437314 by tutor_paul(519)![]() ![]() You can put this solution on YOUR website! The stationary point(s) are where the derivative of the function = 0. \n" ); document.write( "So: \n" ); document.write( "y=3x^2–6x \n" ); document.write( "First Derivative: \n" ); document.write( "dy/dx=6x-6 \n" ); document.write( "Equate it to zero: \n" ); document.write( "6x-6=0 \n" ); document.write( "Solve for x: \n" ); document.write( "6x=6 \n" ); document.write( "x=1 \n" ); document.write( "Plug this value of x back into the original equation to get the Y-coordinate: \n" ); document.write( "y=3x^2–6x \n" ); document.write( "y=3(1)–6(1) \n" ); document.write( "y=-3 \n" ); document.write( "So your answer is: \n" ); document.write( "(1,-3) \n" ); document.write( "-------------------------- \n" ); document.write( "To find out if it is a maximum or a minimum, you need to take the second derivative and determine it's sign. If second derivative is < 0, it is a max. If > 0 it is a min. I will leave that part to you. \n" ); document.write( "==================== \n" ); document.write( "Good Luck, \n" ); document.write( "tutor_paul@yahoo.com \n" ); document.write( " |