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Excel's Formula - sisman

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Exponential trendline<br />

The equation for an exponential trendline looks like this:<br />

y = c * EXP(b * x)<br />

Chapter 17: Charting Techniques 469<br />

Figure 17-29 shows a chart with an exponential trendline added. The first element in a two-cell<br />

array formula in F2:G2 calculates the values for b. The formula is<br />

{=LINEST(LN(B2:B11),A2:A11)}<br />

Figure 17-29: A chart displaying an exponential trendline.

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