Question

Let f: (-1,1)->B,be a function defined by f(x)=____ then f is both one-one and onto when B is in the interval :

Answer 1

\[\LARGE f(x)=\frac{2x}{1-x^2}\]

Answer 2

do you know how to graph f(x)? the graph can aid you in determining the interval B.

Answer 3

no,not this one

Answer 4

Its graph should be some what like this....
So I think its range is (-infinity,+infinity) and it is one one and onto in this range

Answer 5

options are 0 to pi/2 and -pi/2 to pi/2 u can permute the brackets in 2p1 ways and get the 4 options :)

Answer 6

Where the hell did u get pi in this sort of funx????

Answer 7

@shubhamsrg

Answer 8

yes @DLS ?

Answer 9

batao @shubhamsrg

Answer 10

hahahah

Answer 11

I think my graph is correct!!!!

Answer 12

hmm.. it is given the domain is (-1,1)
try x=tan t ^_^

Answer 13

2tan^-1x aya na