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OpenStudy (unklerhaukus):
can some one explain why the modulus of the argument for a logarithm is sometimes used \(\log |x|\)
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OpenStudy (unklerhaukus):
havent worded this question very well
OpenStudy (anonymous):
You mean the absolute value? Because logarithm is undefined for x<0
OpenStudy (unklerhaukus):
yeah exactly , wouldn't taking the modulus mean some extra solutions creep in?
OpenStudy (apoorvk):
Yup. That means the argument of the log is always '+ve', 'cause it's in a mod. So, the negative part of the 'x-axis' can also be included in the domain of the log. The graph can now be:|dw:1338366379800:dw|
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