Question

find the domain and range of real function y=√x-2​

Answer 1

Answer:

domain is [2, infinity), range is [0,infinity)

Step-by-step explanation:

the term under the square root should greater than or equal to 0.

least value of x is 2. so leat value of function is 0. then the value increases

Answer 2

Step-by-step explanation:

Domain and range

f(x)=

9−x

2

y=

9−x

2

9−x

2

≥0

9−x

2

≥0

x

2

≤9

x≤

−

+

3

x∈[−3,3]

y

2

=9−x

2

x

2

=9−y

2

x=

9−y

2

9−y

2

≥0

y

2

≤9y∈3,−3

y=+ve

∵y∈[0,3]