This document provides an introduction to using functions in Microsoft Excel. It explains that Excel uses cells identified by letters and numbers to enter information and formulas. Common functions include SUM to add numbers, AVERAGE to calculate averages, and IF to conditionally return a value. Formulas always begin with an equal sign (=) and can reference multiple cells. Functions make it convenient to automatically calculate and update values. The document provides examples of how to use financial functions like NPV and IRR to analyze the net present value and internal rate of return for projects with cash flows over multiple years.

1. ECO118
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ECO118
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e at the end
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se ?
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