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2. Let f(x) = 14x-5. Which of the following values is NOT in the domain of f?a) 1b) 2c) 4d) 5

Sagot :

Given data:

[tex]f(x)=\sqrt[]{4x-5}[/tex]

For the given function, the value of f(x) should be positive because it is in the root.

So, 1 is not in the domian because when we put 1 f(x) will become a complex number that is

[tex]\begin{gathered} f(x)=\sqrt[]{4\times1-5} \\ f(x)=\sqrt[]{-1} \end{gathered}[/tex]

Thus, the correct option is (a)

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