in general, how do we show linear relationship over a small x of the equation?(adsbygoogle = window.adsbygoogle || []).push({});

Is the equation being able to be Taylor expand show itself as linear? likewise can we consider the series expansion at about x=0 (maclaurin series) to be linear too?

If not, is there any examples countering the above notion? appreciate if anyone can point out to how to substantiate an equation to be linear at small x?

thanks

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# Linear relationship at small x

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