how do we find the 3db bandwidth of a figure?????

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Rahul Shivayogimath
编辑： Rahul Shivayogimath 2016-4-15
I want to find the 3db bandwidth of the figure!!! Y axis has scale in db...one way is to find the maximum value and subtract 3db & find corresponding x coordinates!!! But how to do it because it has a precision issue!!!

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