document.write( "Question 220294: I need an equation that has a domain of [-4, 5/3) U (5/3, infinity)\r
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document.write( "if you could at least walk me through how to find it, that would be great. \n" );
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Algebra.Com's Answer #165437 by Theo(13342)![]() ![]() You can put this solution on YOUR website! 5/3 can't be part of the domain. \n" ); document.write( "If you divide by (3x-5) then when x = (5/3) you will be dividing by 0 because 3*(5/3) - 5 = 5-5 = 0. \n" ); document.write( "That makes x = (5/3) not part of the domain. \n" ); document.write( "----- \n" ); document.write( "Your equation will be something divided by (x-5/3). \n" ); document.write( "----- \n" ); document.write( "Now we need to restrict your domain to values of x >= -4 \n" ); document.write( "----- \n" ); document.write( "We can do that with square root of something that makes the something inside the square root negative when x < -4. \n" ); document.write( "----- \n" ); document.write( "Equation of \n" ); document.write( "----- \n" ); document.write( "When x < -4, expression within the square root sign is negative. This forces the domain to be >= -4. \n" ); document.write( "----- \n" ); document.write( "When x = 5/3, denominator is 0 causing value of the equation to be undefined. This forces the domain to exclude x = 5/3. \n" ); document.write( "----- \n" ); document.write( "Graph of this equation is shown below: \n" ); document.write( " \n" ); document.write( "----- \n" ); document.write( "Table of Values from x = -10 to x = 10 are shown below: \n" ); document.write( "----- \n" ); document.write( "x_______________y \n" ); document.write( "-10____________#NUM! \n" ); document.write( "-9____________#NUM! \n" ); document.write( "-8____________#NUM! \n" ); document.write( "-7____________#NUM! \n" ); document.write( "-6____________#NUM! \n" ); document.write( "-5____________#NUM! \n" ); document.write( "-4____________0 \n" ); document.write( "-3____________-0.071428571 \n" ); document.write( "-2____________-0.128564869 \n" ); document.write( "-1____________-0.216506351 \n" ); document.write( "0____________-0.4 \n" ); document.write( "1____________-1.118033989 \n" ); document.write( "(5/3)________#DIV/0! \n" ); document.write( "2____________2.449489743 \n" ); document.write( "3____________0.661437828 \n" ); document.write( "4____________0.404061018 \n" ); document.write( "5____________0.3 \n" ); document.write( "6____________0.243252128 \n" ); document.write( "7____________0.207289049 \n" ); document.write( "8____________0.182321138 \n" ); document.write( "9____________0.163888694 \n" ); document.write( "10____________0.149666295\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |