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Nghiệm của bất phương trình là

Nghiệm của bất phương trình begin mathsize 16px style 2 to the power of x space plus space 2 to the power of negative x end exponent space minus space 3 space less than space 0 end style là

$log subscript 2 space fraction numerator 3 space minus space square root of 5 over denominator 2 end fraction space less than space x space less than space log subscript 2 space fraction numerator 3 space plus space square root of 5 over denominator 2 end fraction$
$x space less than space log subscript 2 space fraction numerator 3 space minus space square root of 5 over denominator 2 end fraction space comma space space x space greater than space log subscript 2 space fraction numerator 3 space plus space square root of 5 over denominator 2 end fraction$
$log subscript 2 space fraction numerator 4 space minus space square root of 5 over denominator 2 end fraction space less than space x space less than space log subscript 2 space fraction numerator 4 space plus space square root of 5 over denominator 2 end fraction$
$x space less than space log subscript 2 space fraction numerator 4 space minus space square root of 5 over denominator 2 end fraction space comma space x space greater than space log subscript 2 space fraction numerator 4 space plus space square root of 5 over denominator 2 end fraction$