The VDB function in Google Sheets is used to calculate the depreciation of an asset during a specific period, using the double-declining balance method or the declining balance method.

The function requires the following arguments:

cost: the initial cost of the asset salvage: the value of the asset at the end of its life life: the useful life of the asset in years startperiod: the period for which you want to calculate depreciation endperiod: the last period for which you want to calculate depreciation factor: the factor used for depreciation. If this argument is not provided, it defaults to 2 (double-declining balance method) no_switch: a logical value that indicates whether to switch to straight-line depreciation when the depreciation calculated using the factor is less than what would be calculated using straight-line depreciation. If this argument is not provided, it defaults to FALSE (switching is allowed).

The VDB function returns the depreciation of the asset for the specified period, using the chosen depreciation method.