Question

find the domain

Answer 1

\[3x+\left| x \right| / \]

Answer 2

divided by x

Answer 3

what do u think?
which values x CANNOT take ?

Answer 4

0 ??

Answer 5

yes, x cannot take 0, correct
so how would u show that in domain

Answer 6

interval notation here also ?

Answer 7

\[x > 0\]

Answer 8

x can be negative also, right ?
\([\infty ,0)U(0,\infty]\)

Answer 9

sorry,
\([-\infty ,0)U(0,\infty]\)

Answer 10

shouldnt it be like this (\[\left( -\infty,0 \right) U \left( 0,+ \infty \right)\]

Answer 11

generally we include inf and -inf in domain

Answer 12

if u have some examples where its not included, then what u have written can also be accepted as correct.

Answer 13

my teacher says the other way around

Answer 14

then u must follow your teacher

Answer 15

ok thanks

Answer 16

welcome ^_^