The Reciprocal regression option finds the equation of the form

that best fits a set of data. First, press selecting option AEDIT to enter the data .

The data shown here is the points {(2,11.4) (3,17) (5,27.3) (7,36.1) (11,47.7) (13,49.9)}

Press DREG to view the regression options.

For reciprocal regression, select opton 11Rg_x

Press and select Reciprocal regression in the calculation screen. Now press followed by .

Therefore, the best-fit Reciprocal equation for this data is approximately

The regression equation can be automatically stored in the equation editor by entering the name of the equation, such as y1, after (L1,L2 as follows: choose option A and select y1 followed by .