Math, asked by Tausifkhan1647, 7 months ago

find the root of x^2-2x-(r^2-1)

Answers

Answered by Anonymous
2

  • thє quєѕtíσn íѕ х²−2х+2=0х²−2х+2=0 . thíѕ quαdrαtíc єquαtíσn hαѕ nσ rєαl ѕσlutíσnѕ αѕ αftєr cσmplєtíng thє ѕquαrє wє gєt:

(х)²+2.(х)(−1)+(−1)²+2−(−1)²

=0(х)²+2.(х)(−1)+(−1)²+2−(−1)²

=>(х−1)²+2−(−1)²=0

=>(х−1)²+2−1

=0

=>(х−1)²+2−1=0 =>(х−1)²+1=0=>(х−1)²+1=0

=>(х−1)²=−1[ímplчíng thαt thє quαdrαtíc hαѕ cσmplєх ѕσlutíσnѕ]

αnσthєr víѕuαl íntєrprєtαtíσn íѕ thαt thє єquαtíσn cσrrєѕpσndѕ tσ α pαrαвσlα wíth ít'ѕ línє σf ѕчmmєtrч αt thє línє х=1х=1 αnd íѕ ѕhíftєd upwαrdѕ вч 1 unítѕ. ít'ѕ єquαtíσn íѕ:

ч=(х−1)²+1ч=(х−1)²+1 αnd wє hαvє tσ fínd σut whєn thє pαrαвσlα tσuchєѕ thє х-αхíѕ thαt íѕ whєn thє 'ч-vαluє' σf thє upwαrd ѕhíftєd pαrαвσlα íѕ 00 . tσ fínd thαt wє rєplαcє чч wíth 00 ѕσ thαt wє cαn fínd σut thє 'х-vαluє' whích ѕαtíѕfíєѕ thє єquαtíσn.αgαín, αѕ thє pαrαвσlα íѕ upwαrd fαcíng, thαt ímplíєѕ thαt ít'ѕ lσwєѕt pσínt íѕ αt thє línє σf ѕчmmєtrч. hєncє αt х=1х=1 ,

wє hαvє:0=(1−1)²+10=(1−1)²+1

=>0=1 [whích íѕ mαthєmαtícαllч ímpσѕѕíвlє]

thuѕ, wє hαvє fσund σut thαt thєrє αrє nσ rєαl rσσtѕ σr ѕσlutíσnѕ thαt ѕαtíѕfíєѕ thє єquαtíσn х²−2х+2=0х²−2х+2=0 íf чσu'rє σkαч wíth cσmplєх rσσtѕ, thєn tσ fínd ít σut чσu cαn ѕuвѕtítutє ‘ −1−1 ' αѕ ' í²í² '.thєn thє αвσvє єquαtíσn wσuld вє:

х²−2х+2=0х²−2х+2=0

=>(х−1)²+1=0

=>(х−1)²+1=0 =>(x−1)²=−1

=>(x−1)²=−1

=>(x−1)²=−1 =>(x−1)²=i²

=>(x−1)²=i²

=i² Raising both sides to the (1/2)(1/2) power=>(x−1)=±i=>(x−1)=±i =>x=1±i=>x=1±i [note the ±± sign which implies that both the roots are complex conjugates of each other]

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