What is the domain and range of #f(x)= x^2 - 6x + 8#?
2 Answers
Domain:
Range:
Explanation:
Domain:
The function does not converge to a certain value ie:
Your domain is
Range:
Method 1-
Use completing the square method:
Hence you minimum point is
Method 2-
Differentiate :
Let
Therefore,
Minimum point is
It is a minimum point because the graph is a "u" shape (coefficient of
Your range takes values between
Domain
Range
Explanation:
It is a polynomial function, its domain is all real numbers. In interval notation this can be expressed as
For finding its range, we can solve the equation y=
x-3=
x= 3
Hence range is