# find all possible values of f(x)?

##
#f(x)=(1-x^2)/(x^2+3#

##### 1 Answer

Jun 16, 2018

#### Explanation:

Now consider

Thus,

Now let's find

The maximum value of

Thus the range (and hence all possible values) of

We can observe this result from the graph of

graph{(1-x^2)/(x^2+3) [-5.54, 5.556, -2.783, 2.764]}