Page 111 - Grade 10 C.Math

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PsfO 9 ;fwf/0f d"ns / ;8

(Radical and Surd)

9.0 k'g/fjnf]sg (Review)
Curriculum Development Centre
lgDg lnlvt k|Zgx¿df 5nkmn ugxf];\ M
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s] √9 / √ sf] lglZrt dfg lgsfNg ;lsG5 <
cfg'kflts ;ªVof eGgfn] s] a'lemG5 <
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s] √2 , √5 / √7 cfg'kflts ;ª\Vofsf pbfx/0fx¿ x'g\ <

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s'g} ;ªVof h;nfO sf ¿kdf JoSt ul/G5, p, q b'j} k"0ff{ªsx¿ x'g / q  0 5
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eg] pSt ;ªVofnfO cfg'kflts ;ªVof (rational number) elgG5 .

9.1 ;8{x¿ (Surds)

cflbnfO{ sf ¿kdf JoSt ul/Psf] 5 . s] √2, √3 , √5 cflbnfO{ sf
, , , ,

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¿kdf JoSt ug{ ;lsG5 < sf ¿kdf JoSt ug ;lsg] / sf ¿kdf JoSt ug{ g;lsg]

s'g} rf/ rf/ cf]6f pbfx/0fx¿ sIffsf]7fdf k|:tt ug'{xf];\ .
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s'g} ;ªVof h;nfO sf ¿kdf n]Vg ;lsFb}g, To:tf ;ªVofx¿nfO{ cgfg'kflts ;ªVof
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(irrational number) cyjf ;8{ (surd) elgG5 . oL ;ªVofx¿sf] lglZrt dfg lgsfNg
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;lsFb}g . √2, √5 cflb ;8{sf pbfx/0fx¿ x'g\ .

th
√ ( > ) df " √ " nfO{ n cf}F ;fwf/0f d"ns lrx\g (n radical sign) elgG5 .

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h:t M √6 df "√ " t];|f] d"n (third root) xf] .
s] √4 / √27 ;8{x¿ x'g\ < s] ;8{nfO{ cfg'kflts ;ªVofsf] ju{d"n, 3gd"n cflbsf
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¿kdf lng ;lsG5 < 5nkmn ug'{xf];\ .
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dflysf b'O{ d"n lrxgx¿sf] lglZrt dfg lgsfNg ;lsFb}g t;y{ logLx¿ b'j ;8{x¿ x'g .

108 ul0ft, sIff – 10