 rate of change

Date: 1876
a value that results from dividing the change in a function of a variable by the change in the variable <velocity is the rate of change in distance with respect to time>
New Collegiate Dictionary. 2001.
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rate of change — a value that results from dividing the change of a function of a variable by the change in the variable velocity is the rate of change of distance with respect to time … Useful english dictionary
Rate of Change — ► See ROC … Financial and business terms
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