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Show that the function f: R ~ R defined by \[f(x) = 2x ^{2} -7 for x \in R is bijective.\]
What is Risbijective?
Sry!! "R is bijective "

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Other answers:

It is bijective when it is both one one(injective) and onto(surjective)
You can verify with the graph.
Or consult NCERT for theoretical proof.
Haa mai hindi janta hu and can not send you message unless you've fanned me as according to your privacy setting.
ok but bro mujhe realtion fuction nahi aata can u help me ???
Bhai 2 saal pehle padha tha ye sab, but I can try to help.
plz bhai jitna aata hai utna bata de kise mai iss chapter k Question kar saku ..
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.
ok i'll try !! Abhi tu kya karta hia bhai ?
Saal drop kiya, preparing for JEE, ISI, CMI etc
ok mai bhi Improvent dunga !!
Oh, aapne bhi drop kiya hai? hmm lekin mai improvement nahi de raha .
yep!! n jee ki private coching le rahe ho kya ?
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.
where are you from?
Danapur(near patna)
ok well im from Delhi .
hmm.

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