Suriin ang IDNStudy.com at makakuha ng mga sagot sa iyong mga tanong sa iba't ibang paksa. Magtanong ng anumang bagay at makatanggap ng kumpleto at eksaktong sagot mula sa aming komunidad ng mga propesyonal.

what do you mean by domain of a relation/function?

Sagot :

you use the value x for domain and y for range.when we say domain both x is 0      ex
x,y 
(0,5) (0,2) 
-both x is 0
The domain of a relation or function are all the values of x (elements of reals numbers).  Each x-value has a corresponding y value.

Example:

f (x) = 2x + 3         Note:  f(x) is y-value for the given x.
f (4) = 2 (4) + 3
f (4) = 8 + 3
f (4) = 11

This means that if x = 4, then y = 11

The corresponding y-values is the range (elements of real numbers)

If all domain and range are elements of real numbers, then:
Domain = {x/x is an ∈ of Real Numbers}
Domain = (-∞ , +∞)

Range = {y/y is an ∈ or Real Numbers}
Range = (-∞ , +∞)