Reciprocal Function
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The Rule of 70 is a mathematical approximation that calculates how long it takes for a value to double. Examples are as varied as finding how long it takes the Gross Domestic Product to double, how long it takes a savings account to double in value, or how long it takes the price of a product to double due to inflation. The Rule of 70 is given by the formula: t = 70 / r
where t is the time in years for the value to double
r is the annual % rate of increase
Explain what is a reciprocal function how is the above formula connected to reciprocal functions?
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Reciprocal Functions are clearly articulated.
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The general form of the reciprocal function: f(x) = 1/x, where x not equal to zero.
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