## rishabh.mission 2 years ago plz help

1. rishabh.mission

Show that the function f: R ~ R defined by $f(x) = 2x ^{2} -7 for x \in R is bijective.$

2. Outkast3r09

What is Risbijective?

3. rishabh.mission

Sry!! "R is bijective "

4. shubhamsrg

It is bijective when it is both one one(injective) and onto(surjective)

5. shubhamsrg

You can verify with the graph.

6. shubhamsrg

Or consult NCERT for theoretical proof.

7. shubhamsrg

Haa mai hindi janta hu and can not send you message unless you've fanned me as according to your privacy setting.

8. rishabh.mission

ok but bro mujhe realtion fuction nahi aata can u help me ???

9. shubhamsrg

Bhai 2 saal pehle padha tha ye sab, but I can try to help.

10. rishabh.mission

plz bhai jitna aata hai utna bata de kise mai iss chapter k Question kar saku ..

11. shubhamsrg

Mai to is type ke ques hamesha graph se karta tha, tum bhi, graph se attempt kar sakte ho warna NCERT to hai hi help ke liye.

12. rishabh.mission

ok i'll try !! Abhi tu kya karta hia bhai ?

13. shubhamsrg

Saal drop kiya, preparing for JEE, ISI, CMI etc

14. rishabh.mission

ok mai bhi Improvent dunga !!

15. shubhamsrg

Oh, aapne bhi drop kiya hai? hmm lekin mai improvement nahi de raha .

16. rishabh.mission

yep!! n jee ki private coching le rahe ho kya ?

17. shubhamsrg

hmm,sort of mai yaha actually 1 remote area me hu, to bahut zyada facilities nahi hai, badi badi coachings nahi hai. Lekin 1 tuition liya hua hai. Tuition cum coaching.

18. rishabh.mission

where are you from?

19. shubhamsrg

Danapur(near patna)

20. rishabh.mission

ok well im from Delhi .

21. shubhamsrg

hmm.