Question

Using complete sentences, explain why f(1) = 0, f(0) = -1, and f(-1) = -2, yet f(1/3) is undefined.

Answer 1

so where is f(x)=0

where is this function f(x) ?

Answer 2

oh sorry. f(x) = x - 1

Answer 3

so than f(1/3)= (1/3) -1 =(1-3)/3 = -2/3

so this not is undefined just if there in your mathbooke from this function f(x)=x-1 being again anything property added

- do you see again there anything from f(x) ?

Answer 4

well see i thought the same thing. But my paper is asking me why is that one undefined and i dont understand what you mean by your question.

Answer 5

so for examnple if there being ,has wrote that f(x) is always positiv so than f(1/3) will be undefined

ok ?

Answer 6

Well in the beginning it asked me to simplify (3x^2 - 4x + 1)/(3x - 1).. Then it asks me what you already know.

Answer 7

or if x need to be integer so than f(x) will be undefined

- i think

i think that f(1/3) can being considered undefined if like property of f(x)

ok so now i understand why f(1/3) is undefined

Answer 8

so check it newly what you have there like function ?

so you see that there is a fraction

Answer 9

and how do you know it when a fraction is undefined ?

Answer 10

so for denominator there is 3x-1 ,and if you replace,substitute 1/3 in place of x what will get ?

Answer 11

hope so much that now you understand it right sure easy

yes ?

Answer 12

I'm not sure when youknow whether or not a funciton can be undefined or not. When you substitute it into the equation f(x) = x - 1, you have 0.

Answer 13

so because there is a fraction with denominator 3x-1

yes ?

Answer 14

so and because 3*(1/3) -1 =0 so for this case because a fraction not can being with denominator zero

so for this case will be f(1/3) undefined

ok ?

Answer 15

in the begining step check your exersice

ok ?

Answer 16

ok i think i am starting to get it. tahnk you so much!!

Answer 17

yw

good luck

bye