Log of (1+x)to the base 1 -Log of (1-x) to the base 1 = 1
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) 215(6x2)≤3−15/612−12x
Taking logarithm with base 2, we get 15+x2log26≤−15log23−12(1−x)
⇒x2−12x+27≤0
⇒3≤x≤9
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