Question

Find the domain and range of f(x) = x^2/(1+x^2)?

Answer 1

Do you understand what domain and range represent for x and y values?

Answer 2

Yup

Answer 3

cool, where are you having trouble then? :D

Answer 4

i have trouble in solving range

Answer 5

what did you get for your domain?

Answer 6

devide top and bottom by x^2 and find limit when x goes to infinity

Answer 7

Domain = R

Answer 8

Yup, it's all real numbers. well is y ever negative?

Answer 9

to see better what is range write it in this way:
\[1-1 /(x ^{2}+1)\]

Answer 10

got it?

Answer 11

nop

Answer 12

Well do you think that values of y can be negative?? (not sure if you were replying to myko or me..)

Answer 13

first make sure that you understand why @agentc0re asks you about sign of (fx)

Answer 14

i got it.............))

Answer 15

thxxxx

Answer 16

great, good job. This is a nice equation because it's always greater than zero. :D