To solve logarithmic equations in Excel, you can use the LOGEST function. This function returns an array of values that describe the exponential curve that best fits your data. To use the LOGEST function, enter the equation into a cell and then select the cell. Then, go to the Formulas tab and select the Insert Function option. In the Insert Function dialog box, select LOGEST from the list of functions and click OK. Enter the known x-values and y-values into the dialog box and click OK. The LOGEST function will return the coefficients of the equation that best fits your data.
