document.write( "Question 1207410: If f(x) is a function whose domain is [-8,4], and g(x) = f(-2x), then what is the domain of g(x)? Express your answer in interval notation.\r
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document.write( "I tried multiplying the original domain by -2, which yields [-8,16], but that is incorrect. Can anyone help? Thanks in advance! \n" );
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Algebra.Com's Answer #845263 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Ignore the absurd response from tutor @MathLover1. \"[16,-8]\" is not correct notation for any interval.... \n" ); document.write( "For the given function f(x), the function is defined when x is between -8 and 4. \n" ); document.write( "So for the function f(-2x), the function is defined when -2x is between -8 and 4 -- which is between -8/-2 = 4 and 4/-2 = -2. Then of course you need to write the answer in interval notation with the smaller number first. \n" ); document.write( "ANSWER: [-2,4] \n" ); document.write( " \n" ); document.write( " |