document.write( "Question 676223: Find the absolute extreme values of f(x)=3x^5-15x^4-25x^3 on the interval [-2,3]\r
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document.write( "please help! \n" );
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Algebra.Com's Answer #420237 by swincher4391(1107)![]() ![]() You can put this solution on YOUR website! Take the derivative to get 15x^4 - 60x^3 - 75x^2\r \n" ); document.write( "\n" ); document.write( "Factor out a 15x^2 to get x^2-4x-5 This factors into 15x^2(x-5)(x+1).\r \n" ); document.write( "\n" ); document.write( "Then you would get 0,-1,5 are your critical points. But 0 and -1 are the only things on your interval.\r \n" ); document.write( "\n" ); document.write( "Then you plug in the end points:\r \n" ); document.write( "\n" ); document.write( "f(-2) = -136 \n" ); document.write( "f(3) = -1161\r \n" ); document.write( "\n" ); document.write( "And then plug in your critical values:\r \n" ); document.write( "\n" ); document.write( "f(-1) = 7 \n" ); document.write( "f(0) = 0\r \n" ); document.write( "\n" ); document.write( "Then 7 is your absolute maximum and -1161 is your minimum. \n" ); document.write( " |