plz help

Question

plz help

rishabh.mission · Answer

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

anonymous · Answer

What is Risbijective?

rishabh.mission · Answer

Sry!! "R is bijective "

shubhamsrg · Answer

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

shubhamsrg · Answer

You can verify with the graph.

shubhamsrg · Answer

Or consult NCERT for theoretical proof.

shubhamsrg · Answer

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

rishabh.mission · Answer

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

shubhamsrg · Answer

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

rishabh.mission · Answer

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

shubhamsrg · Answer

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.

rishabh.mission · Answer

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

shubhamsrg · Answer

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

rishabh.mission · Answer

ok mai bhi Improvent dunga !!

shubhamsrg · Answer

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

rishabh.mission · Answer

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

shubhamsrg · Answer

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.

rishabh.mission · Answer

where are you from?

shubhamsrg · Answer

Danapur(near patna)

rishabh.mission · Answer

ok well im from Delhi .

shubhamsrg · Answer

hmm.