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How Does Goal Seek Work?

When you set up a worksheet to use Goal Seek, you usually have a formula in one cell and the formula's variable—with an initial value—in another. (Your formula can have multiple variables, but Goal Seek enables you to manipulate only one variable at a time.) Goal Seek operates by using an iterative method to find a solution. That is, Goal Seek first tries the variable's initial value to see whether that produces the result you want. If it doesn't, Goal Seek tries different values until it converges on a solution.

→ To learn more about iterative methods, seeUsing Iteration and Circular References,” p. 90.



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