Question

((x+1)(x-5)(x^3-3))/(sqrt(x-4))
Where is function positive , negative , undefined

Answer 1

at x=2 it is undefined

Answer 2

it cant be 2 because anything less then 4 is undefined

Answer 3

ok so it is at 4 then

Answer 4

no its -infinity to -4 open

Answer 5

ya i guess that makes most sense

Answer 6

ya i am totally wrong abt that

Answer 7

you know ordinary people call it the problem of finding the domain.

Answer 8

The function seems undefined for $$x \le 4$$.

Answer 9

but wehere is it positive and negative

Answer 10

how about just substituting some values and checking ? ;)

Answer 11

i did but i dont know if the 5 is supposed to be closed or open since the 5 is a zero

Answer 12

Is zero is positive or negative ?

Answer 13

neither

Answer 14

Yes then why should it be closed ? ;)

Answer 15

so is it negative (4,5) positive (5, infin)

Answer 16

You are asking me or telling me ?

Answer 17

asking

Answer 18

I don't see any problem with that statement :)

Answer 19

can u take a look at my next question