NHoldFirst
is an attribute which specifies that the first argument to a function should not be affected by N.
Examples
open all close allBasic Examples (1)
Prevent N from affecting the first argument of a function:
Scope (2)
System symbols with the NHoldFirst attribute:
The 
zero of the zeta function on the critical line with the imaginary part greater than 
:
N does not affect the index 
:
When the second argument is numeric, N evaluates numerically:
Applications (1)
Set the NHoldFirst attribute so that 
remains an integer:
A symbolic representation of an inverse of 
:
This remains unmodified with N:
With a numeric value of x, the function binv evaluates numerically:
Properties & Relations (1)
HoldFirst prevents evaluation while NHoldFirst only prevents numerical evaluation:
Text
Wolfram Research (1996), NHoldFirst, Wolfram Language function, https://reference.wolfram.com/language/ref/NHoldFirst.html.
CMS
Wolfram Language. 1996. "NHoldFirst." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/NHoldFirst.html.
APA
Wolfram Language. (1996). NHoldFirst. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/NHoldFirst.html