Question

Question 1
Find the range of the function f given by f(x) = |5 - x|​

Answer 1

Answer:

(-∞,5)

Step-by-step explanation:

|5-x|

when mod function is there always think about strictly >0

so, I use this property..

=> (5-x) > 0

=> (-x+5) > 0

=> -(-x+5) < 0   (when multiply by both side with minus"-" the inequality will be change)

=> (x- 5) < 0

=> x < 5

=> x ∈ (-∞,5)

 

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