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Logarithmic Function

lf fx=0 is ...

Question

lf $f (x) = 0$ is a reciprocal equation of second type and even degree, then a factor of $f (x)$ is:

A

x + 1

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B

x - 1

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C

x^{2} - 1

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D

x^{2}

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Solution

The correct options are
A $x + 1$
B $x - 1$
C $x^{2} - 1$
The equation will have 2 solutions, 1 and -1.
The solution will be x+1 and x-1,
$(x - 1) (x + 1) = x^{2} - 1$

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