Math

QuestionDetermine where the function f(x)=x+1x3xf(x)=\frac{x+1}{x^{3}-x} is undefined by finding the values of xx.

Studdy Solution

STEP 1

Assumptions1. The function is f(x)=x+1x3xf(x)=\frac{x+1}{x^{3}-x} . We need to find the values of xx for which the function is undefined.

STEP 2

A function is undefined when the denominator of a fraction is equal to zero. So, we need to find the values of xx that make the denominator of the function equal to zero.
xx=0x^{}-x=0

STEP 3

We can factor out an xx from the equation to simplify it.
x(x21)=0x(x^{2}-1)=0

STEP 4

The equation x21=0x^{2}-1=0 is a difference of squares, which can be factored as (x1)(x+1)(x-1)(x+1).
So, the factored form of the equation isx(x1)(x+1)=0x(x-1)(x+1)=0

STEP 5

Setting each factor equal to zero gives the solutions for xx.
x=0,x1=0,x+1=0x=0, x-1=0, x+1=0

STEP 6

olving the above equations for xx givesx=0,x=1,x=1x=0, x=1, x=-1So, the function f(x)=x+1x3xf(x)=\frac{x+1}{x^{3}-x} is undefined for x=0x=0, x=1x=1, and x=1x=-1.

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