### SYD (cost, salvage, life, period)

Basic and Crystal syntax.

##### Arguments

- cost is a Number or Currency that specifies the initial cost of the asset.
- salvage is a Number or Currency that specifies the value of the asset at the end of its useful life.
- life is a positive Number that specifies the length of the useful life of the asset.
- period is a Number that specifies the period for which asset depreciation is calculated. The value is positive and less than or equal to life. The arguments life and period must have the same units.

##### Returns

Number value

##### Action

SYD returns a Number specifying the sum-of-years' digits depreciation of an asset for a single period.

##### Examples

The following examples are applicable to both Basic and Crystal syntax:

Suppose a company purchases a fleet of cars for $500,000. The cars have a lifetime of 10 years and a salvage value of $60,000. They are depreciated as follows:

`SYD (500000, 60000, 10, 1)`

Returns 80000. The first year's depreciation is $80,000.

`SYD (500000, 60000, 10, 4)`

Returns 56000. The fourth year's depreciation is $56,000.

`SYD (500000, 60000, 10, 10)`

Returns 8000. The final year's depreciation is $8,000.

##### Comment

This function is designed to work like the Visual Basic function of the same name.

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