Find N (4) for the function, N (u) = 4.

N (4) = 4

Step-by-step explanation:

The given function is N (u) = 4, where N is the function and u is the independent variable.

Now, the value of the function N (u) is a constant and independent of u variable.

Therefore, for each and every value of the variable u the N (u) will be 4 and this is a constant function.

Hence, N (4) = 4 (Answer)