Why Are 0 and 4 Excluded from the Range in This Function?

[coconut62]

Homework Statement

Please refer to the image attached. The first part, (i).

Homework Equations

None.

The Attempt at a Solution

My answer is 0 </= x </= 4, but the answer says 0<x<4.
Why are 0 and 4 not included?

Since the domain includes 6, then 0.5(6)+1 =4, 4 should be included right?

 

[Tanya Sharma]

Homework Statement

Please refer to the image attached. The first part, (i).

Homework Equations

None.

The Attempt at a Solution

My answer is 0 </= x </= 4, but the answer says 0<x<4.
Why are 0 and 4 not included?

Since the domain includes 6, then 0.5(6)+1 =4, 4 should be included right?

You are right,0 and 4 are part of the range.