Identity Function
Usage
![Identity[expr] gives expr (the identity operation).](data:image/gif;base64,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)
Basic example
![In[1]:=Identity[x + y]
Out[1]=x + y](data:image/gif;base64,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)
Attribute
Protected
Relationships with other entities
Typical ranks of usage in programs
History
Timeline
Why Club Z!?
We're Awesome!
Vestibulum vitae aliquam nunc. Suspendisse mollis metus ac tellus egestas pharetra. Suspendisse at viverra purus. Pellentesque nec posuere ligula, eu congue leo. Integer vulputate tempor arcu. Vestibulum vulputate
We're Awesome!
Vestibulum vitae aliquam nunc. Suspendisse mollis metus ac tellus egestas pharetra. Suspendisse at viverra purus. Pellentesque nec posuere ligula, eu congue leo. Integer vulputate tempor arcu. Vestibulum vulputate Vestibulum vitae aliquam nunc. Suspendisse mollis metus ac tellus egestas pharetra. Suspendisse at viverra purus. Pellentesque nec posuere ligula, eu congue leo. Integer vulputate tempor arcu. Vestibulum vulputate
We're Awesome!
Vestibulum vitae aliquam nunc. Suspendisse mollis metus ac tellus egestas pharetra. Suspendisse at viverra purus. Pellentesque nec posuere ligula, eu congue leo. Integer vulputate tempor arcu. Vestibulum vulputate Vestibulum vitae aliquam nunc. Suspendisse mollis metus ac tellus egestas pharetra. Suspendisse at viverra purus. Pellentesque nec posuere ligula, eu congue leo. Integer vulputate tempor arcu. Vestibulum vulputate
We're Awesome!
Vestibulum vitae aliquam nunc. Suspendisse mollis metus ac tellus egestas pharetra. Suspendisse at viverra purus. Pellentesque nec posuere ligula, eu congue leo. Integer vulputate tempor arcu.
