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

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SUMMARY

The discussion centers on the exclusion of the values 0 and 4 from the range of a specific mathematical function. The correct interpretation of the range is established as 0 < x < 4, indicating that both endpoints are not included. This conclusion is supported by the function's behavior at the endpoints, which confirms that while the domain includes values leading to 4, the function does not attain these boundary values. Therefore, the range is strictly defined without including 0 and 4.

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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?
 

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coconut62 said:

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.
 
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