In mathematics, a power function is a function of the form f(x) = cxa, where c and a are constant real numbers and x is a variable.
Power functions are a special case of power law relationships, which appear throughout mathematics and statistics.
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“The miracles of the church seem to me to rest not so much upon faces or voices or healing power coming suddenly near to us from afar off, but upon our perceptions being made finer, so that for a moment our eyes can see and our ears can hear what is there about us always.”
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