SOLUTION: ln (x+1) + ln (x+3) < ln (x+7)

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Question 966219: ln (x+1) + ln (x+3) < ln (x+7)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
ln%28x%2B1%29+%2B+ln%28x%2B3%29+%3C+ln%28x%2B7%29
ln%28%28x%2B1%29%28x%2B3%29%29+%3C+ln%28x%2B7%29
%28x%2B1%29%28x%2B3%29+%3C+%28x%2B7%29
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Look for values when the parabola is below the straight line,
-4%3Cx%3C1
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However since the logarithm only takes positive values,
take the argument that has the minimum value,
x%2B1%3E0
x%3E-1
Putting those two limits together,
-1%3Cx%3C1
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