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আ঩নায ই−ফুক ফা pdf রযডারযয Menu Bar এয View অ঩঱নরি তে রিক করয Auto /Automatically Scroll অ঩঱নরি র঳ররক্ট
করুন (অথফা ঳যা঳রয তমরে  Ctrl + Shift + H )। এফায ↑ up Arrow ফা ↓ down Arrow তে রিক করয আ঩নায ঩ড়ায ঳ুরফধা
অনু঳ারয স্ক্রর স্পীড রিক করয রনন।
 ( )( ) ( )
 ( ) −−−−−(x)
⇛ ( ) −
⇛ . / . / −
 ( − ) − −−−−−(y)
⇛ ( − )
⇛ . / . − /
 ( ) ( − ) ( ) [ ∵ (x) +(y)]
⇛
( ) ( )
 ( ) − ( − ) [ ∵ (x) − (y)]
⇛( ) ( − )
⇛( − ) ( ) − ⇛
( ) ( )
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 ( )
⇛ ( ) − ( )
( ) ( ) ( ) ( )
 ( )( )( ) ( ) ( )
( )
⇛ ( ) − ( )
( − ) − −
⇛ − ( − ) ( − )
 − ( )( − − − )
⇛ − ( ) *( − ) ( − ) ( − ) +
 ( − ) ( − ) ( − ) ( − )( − )( − )
 − ( )( − )
 ( )( − )
 − ( − )( )
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 যার঱রিরক উৎ঩াদন রফরেলণ কযরে ঴রর , ধ্রফ যার঱ q ঳ংখ্যারিরক এভন দুইরি উৎ঩াদরক (a ও b
)প্রকা঱ কযরে ঴রফ মায ঳ভরি ফা তমাগপর x এয ঳঴গ q (q= a+b) এয ঳ভান। এফং গুণপর ধ্রফ যার঱ r
(r=a×b)এয ঳ভান।
⇛ ( ) ( )( )
1) q>0, r>0 ঴রর ( )( )
2) q<0, r>0 ঴রর ( − )( − )
3) q>0, r<0 ঴রর a ও b এয ভরধয ফড়রি + ও ত ািরি – ঴রফ।
 ( ) ( )( )
 ( ) ( )
( )( )( )
 ( ) ( )( ) ঴রর এয ভুরদ্বয় ঴রফ x = -a , x = -b ।

 এয ভূরদ্বয় α ও β ঴রর,⇒ α + β − এফং α × β =
∴ ঳ভীকযণ − (α β ) αβ
 ঳ভীকযরণয এয ভূরদ্বয়
√ 2 4
2
 যার঱রক (x-m) যার঱ দ্বাযা বাগ কয?
এখ্ারন (x-m) তক এভন একরি যার঱ দ্বাযা গুন কযরে ঴রফ মারে গুণপররয প্রথভ যার঱ এফং
বাজ্য( ) এয প্রথভ যার঱য( ) ঳ভান ঴য় । এখ্ন তম যার঱ দ্বাযা গুন কযা ঴রয়র ত঳রি বাগপরর
ফ঳রফ । এফং গুণপর বাজ্য এয রনরে ফর঳রয় রফরয়াগ কযরে ঴রফ। এবারফ ঩মযায়ক্ররভ বাগ করয তমরে ঴রফ ।
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 a× × × × … (n ঳ংখ্যক a এয গুণপর )
 ( ) 
 √  √
 √ ( √ )  √  √  √
 ( )
 ( )
 . /

 ফা ( )
 মরদ ঴য় ⇒ ∴ √
 মরদ ঴য় ∴ x =y  মরদ ঴য় ∴
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 তক “ a রবরিক রগ n”঩ড়া ঴য়।
 শুধু ধনাত্নক ঳ংখ্যায রগারযদভ আর । ঱ূনয ও ঋনাত্নক ঳ংখ্যায রগারযদভ তনই।
 ঳াধাযণ রগারযদরভয রবরি 10 ধযা ঴য়। তফাঝারে তক তফাঝায়।
 ঴রর x =
⇛ x = ঴রর
  

 

⇛ ×
⇛ × ×
 ×


 ( )
 . / −
 √


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অজ্ঞাে যার঱ ঳ভূর঴য ভান দ্বাযা একারধক মুগ঩ৎ র঳ধ হ ঴রর ,঳ভীকযণ ঳ভূ঴রক একরস ঳঴ ঳ভীকযণ ফরর।
এই ধযরণয অংক ঩যীক্ষায় MCQ র঴঳ারফ আ঳রর , ঳াভাধারনয তক্ষরস MCQ এয োযরি Answer Choice এ x ও y
এয োযরজ্াড়া ভান তদওয়া থাকরফ। এখ্ন প্ররেযক তজ্াড়া ভান অথযাৎ x ও y এয ভান প্ররে তদওয়া দুরি ঳ভীকযরণয
তম তকান একরিরে(রম ঳ভীকযণরি অর঩ক্ষাক
ৃ ে ঳঴জ্) ফ঳ান। এফং তদখ্ুন তকান ভারনয জ্নয ঳ভীকযণরি ঱ূনয ঴য়। তম
ভারনয জ্নয ঳ভীকযণরি ঱ূনয ঴রফ ত঳ই ভানরি অ঩য ঳ভীকযরণও ফর঳রয় তদখ্ুন ঱ূনয ঴য় রকনা , মরদ তকাণ ভারনয জ্নয
উবয় ঳ভীকযণ ঱ূনয ঴য় ো঴রর ঳রিক উিয ঴রফ ত঳রি।
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ক্ররভক ঳ভান্তয ধাযাাঃ 1(First Term) ……………………n(Last Term)
এই ধাযায় ঳াধাযণ অন্তয (Common Difference) =Second term – first Term = 1
 ঩দ঳ংখ্যা (Number of Terms) =
ত঱ল ঩দ প্রথভ ঩দ
঳াধাযণ অন্তয
+ 1
 ঳ভরি (Sum of the Series) =
ত঱ল ঩দ প্রথভ ঩দ
× ঩দ঳ংখ্যা =
( )
 গড় (Avarage of the Series) =
ত঱ল ঩দ প্রথভ ঩দ
=
a + (a+d) + (a+2d) ( d) …………………………… n
এখ্ারন ধাযারিয ,
প্রথভ ঩দ = a
঳াধাযণ অন্তয d = রদ্বেীয় ঩দ – প্রথভ ঩দ
঩দ ঳ংখ্যা = n
∴ ধাযায েভ n ঩দ (র঱ল ঩দ) (n− )d
⇛ n =
ত঱ল ঩দ
−
ধাযায n েভ ঩রদয ঳ভরি = * (n− )d+
… … … …
এখ্ারন গুরনািয ধাযারিয,
প্রথভ ঩দ = a
঳াধাযণ অনু঩াে r =
রদ্বেীয় ঩দ
প্রথভ ঩দ
঩দ ঳ংখ্যা = n
ধাযায n েভ ঩দ = ×
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

 r >0 ফা 1 অথযাৎ অনু঩াে r ধনাত্নক ঩ূনয ঳ংখ্যা ঴রর,
ধাযায n েভ ঩রদয ঳ভরি ×
 r < 0 ফা 1 অথযাৎ অনু঩াে r ঋনাত্নক ফা বগ্াং঱ (.1 -.9 )঳ংখ্যা ঴রর,
ধাযায n েভ ঩রদয ঳ভরি ×
 মখ্ন -1<r<1 ঴রর , এফং n→ ঴রর
ধাযায n েভ ঩রদয ঳ভরি
ধাযায তমাগপর ফা ঳ভরি =
ধাযারে ঩রদয ঳ংখ্যা = n
ধাযায n েভ ঩দ = ত঱ল ঩দ
 1 ……………… n
⇛ =
( )
 1 5 7 ………………
( − )
েভ ঩দ
ত঱ল ঩দ
⇛ = (঩দ঳ংখ্যা) =
 … … … … …
⇛ = × n(n-1)(2n+1)
 ( ) … … … … … … …
⇛ = −
 … … … … … … … … …
⇛ =
( )
= *
( )
+
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 1, 4, 9, 16……………. ⇒ 5,∵ 5 ]
1 , 9 , 25, 49, 81 ………… ⇒ ,∵ 5 7 9 রফরজ্াড় ঳ংখ্যা ]
 9 36 81 144 …….. ⇒ 5,∵ ( ) ( ) ]
 81, 27, …. 3, 1 ⇒ 9 ,∵ ]
 1, 2, 3, 5, 8 , 13 , 21 , 34……. ⇒ 55[∵ তম তকাণ ঩দ = োয ঩ুরফযয দুরি ঩রদয ঳ভরি ]
 8, 11, 17, 29, 53,….. ⇒ 101 [∵8, 8+(11-8),11+(17-11), …]
 1, 3, 6, 10, 15, 21,…. ⇒ 28 [∵ 1,(1+2),(3+3),(6+4), (10+5)]
 2, 8, 18, 32,…… ⇒ 50 [∵ 2,(2+6),(8+6+4),(18+6+4+4), (32+6+4+4+4)]
 2, 4, 8, 14, 22, 32…. ⇒44 [∵ 2,(2+2),(4+2+2),(8+2+2+2), (14+2+2+2+2)]
 0, 5, 12, 21, 32….. ⇒ 45 [∵ 0,(0+5),(5+5+2),(12+5+2+2), (21+5+2+2+2)]
 13, 17, 25, 41,….. ⇒ 73 [∵ 13,(13+22
),(17+23
),(25+24
), (41+25
)]
 5, 7, 11, 19,….. ⇒ 5 [∵ 5,(5+21)(7+22
),(11+23
),(19+24
)]
 8 … ⇒ [∵ 4,(4+21)(6+22
),(10+23
),(18+24
)]
 3, 6, 4, 9, 5, 12, 6,…. ⇒ 5 ,∵ t1:t3:t5:t7 ⇒ 5 | t2:t4:t6:t8 ⇒ 9 5-
 8 9 … ⇒ 7 ,∵ (t1 +4),(t2+8)(t3+4)(t4+8)]
 7 5 5 8 …… ⇒ 9
,∵ t3:t5:t7 ⇒ ( 7-2),(27-4),(27-6),(27-8)| t4:t6:t8 ⇒ (5 ) (5 ) (5 9)-
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0, 9, 17, 24…35, 39, 42 ….⇒
 5 8 … ⇒
1, 3, 6 9 5 … ⇒ 8
 7 … ⇒
 7 5 … ⇒
 7 9 … 5 ⇒
 … 9 ⇒
 7 8 5 5 9…… ⇒ 7
 … ⇒
 7 5 9 7 … ⇒ 5
15, 13, 12, 11, 9, 9.. ⇒
 7 8 8 ⇒ 7
 8 5 8 … ⇒ 9
 9 7 5 8 … ⇒
 9 5 7 … ⇒ 99
 5 ⇒ 7
 5 7 … ⇒ 7
 5 8 7 … ⇒ 8
 9 7 … 5 5 ⇒ 8
21, 18, 9 7 … ⇒
 8 5 5 9 … ⇒
 5 … ⇒ 9
 7 7 5 ⇒ 5
 5 9 5 …⇒ 5
 5 … ⇒ 7
 7 8 8 8 … ⇒ 8
3, 7, 28, 32, 8, 12, 48, … ⇒5
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  • 1. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com আ঩নায ই−ফুক ফা pdf রযডারযয Menu Bar এয View অ঩঱নরি তে রিক করয Auto /Automatically Scroll অ঩঱নরি র঳ররক্ট করুন (অথফা ঳যা঳রয তমরে  Ctrl + Shift + H )। এফায ↑ up Arrow ফা ↓ down Arrow তে রিক করয আ঩নায ঩ড়ায ঳ুরফধা অনু঳ারয স্ক্রর স্পীড রিক করয রনন।  ( )( ) ( )  ( ) −−−−−(x) ⇛ ( ) − ⇛ . / . / −  ( − ) − −−−−−(y) ⇛ ( − ) ⇛ . / . − /  ( ) ( − ) ( ) [ ∵ (x) +(y)] ⇛ ( ) ( )  ( ) − ( − ) [ ∵ (x) − (y)] ⇛( ) ( − ) ⇛( − ) ( ) − ⇛ ( ) ( )
  • 2. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com  ( ) ⇛ ( ) − ( ) ( ) ( ) ( ) ( )  ( )( )( ) ( ) ( ) ( ) ⇛ ( ) − ( ) ( − ) − − ⇛ − ( − ) ( − )  − ( )( − − − ) ⇛ − ( ) *( − ) ( − ) ( − ) +  ( − ) ( − ) ( − ) ( − )( − )( − )  − ( )( − )  ( )( − )  − ( − )( )
  • 3. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com  যার঱রিরক উৎ঩াদন রফরেলণ কযরে ঴রর , ধ্রফ যার঱ q ঳ংখ্যারিরক এভন দুইরি উৎ঩াদরক (a ও b )প্রকা঱ কযরে ঴রফ মায ঳ভরি ফা তমাগপর x এয ঳঴গ q (q= a+b) এয ঳ভান। এফং গুণপর ধ্রফ যার঱ r (r=a×b)এয ঳ভান। ⇛ ( ) ( )( ) 1) q>0, r>0 ঴রর ( )( ) 2) q<0, r>0 ঴রর ( − )( − ) 3) q>0, r<0 ঴রর a ও b এয ভরধয ফড়রি + ও ত ািরি – ঴রফ।  ( ) ( )( )  ( ) ( ) ( )( )( )  ( ) ( )( ) ঴রর এয ভুরদ্বয় ঴রফ x = -a , x = -b ।   এয ভূরদ্বয় α ও β ঴রর,⇒ α + β − এফং α × β = ∴ ঳ভীকযণ − (α β ) αβ  ঳ভীকযরণয এয ভূরদ্বয় √ 2 4 2  যার঱রক (x-m) যার঱ দ্বাযা বাগ কয? এখ্ারন (x-m) তক এভন একরি যার঱ দ্বাযা গুন কযরে ঴রফ মারে গুণপররয প্রথভ যার঱ এফং বাজ্য( ) এয প্রথভ যার঱য( ) ঳ভান ঴য় । এখ্ন তম যার঱ দ্বাযা গুন কযা ঴রয়র ত঳রি বাগপরর ফ঳রফ । এফং গুণপর বাজ্য এয রনরে ফর঳রয় রফরয়াগ কযরে ঴রফ। এবারফ ঩মযায়ক্ররভ বাগ করয তমরে ঴রফ ।
  • 4. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com  a× × × × … (n ঳ংখ্যক a এয গুণপর )  ( )   √  √  √ ( √ )  √  √  √  ( )  ( )  . /   ফা ( )  মরদ ঴য় ⇒ ∴ √  মরদ ঴য় ∴ x =y  মরদ ঴য় ∴
  • 5. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com  তক “ a রবরিক রগ n”঩ড়া ঴য়।  শুধু ধনাত্নক ঳ংখ্যায রগারযদভ আর । ঱ূনয ও ঋনাত্নক ঳ংখ্যায রগারযদভ তনই।  ঳াধাযণ রগারযদরভয রবরি 10 ধযা ঴য়। তফাঝারে তক তফাঝায়।  ঴রর x = ⇛ x = ঴রর        ⇛ × ⇛ × ×  ×    ( )  . / −  √  
  • 6. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com অজ্ঞাে যার঱ ঳ভূর঴য ভান দ্বাযা একারধক মুগ঩ৎ র঳ধ হ ঴রর ,঳ভীকযণ ঳ভূ঴রক একরস ঳঴ ঳ভীকযণ ফরর। এই ধযরণয অংক ঩যীক্ষায় MCQ র঴঳ারফ আ঳রর , ঳াভাধারনয তক্ষরস MCQ এয োযরি Answer Choice এ x ও y এয োযরজ্াড়া ভান তদওয়া থাকরফ। এখ্ন প্ররেযক তজ্াড়া ভান অথযাৎ x ও y এয ভান প্ররে তদওয়া দুরি ঳ভীকযরণয তম তকান একরিরে(রম ঳ভীকযণরি অর঩ক্ষাক ৃ ে ঳঴জ্) ফ঳ান। এফং তদখ্ুন তকান ভারনয জ্নয ঳ভীকযণরি ঱ূনয ঴য়। তম ভারনয জ্নয ঳ভীকযণরি ঱ূনয ঴রফ ত঳ই ভানরি অ঩য ঳ভীকযরণও ফর঳রয় তদখ্ুন ঱ূনয ঴য় রকনা , মরদ তকাণ ভারনয জ্নয উবয় ঳ভীকযণ ঱ূনয ঴য় ো঴রর ঳রিক উিয ঴রফ ত঳রি।
  • 7. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com ক্ররভক ঳ভান্তয ধাযাাঃ 1(First Term) ……………………n(Last Term) এই ধাযায় ঳াধাযণ অন্তয (Common Difference) =Second term – first Term = 1  ঩দ঳ংখ্যা (Number of Terms) = ত঱ল ঩দ প্রথভ ঩দ ঳াধাযণ অন্তয + 1  ঳ভরি (Sum of the Series) = ত঱ল ঩দ প্রথভ ঩দ × ঩দ঳ংখ্যা = ( )  গড় (Avarage of the Series) = ত঱ল ঩দ প্রথভ ঩দ = a + (a+d) + (a+2d) ( d) …………………………… n এখ্ারন ধাযারিয , প্রথভ ঩দ = a ঳াধাযণ অন্তয d = রদ্বেীয় ঩দ – প্রথভ ঩দ ঩দ ঳ংখ্যা = n ∴ ধাযায েভ n ঩দ (র঱ল ঩দ) (n− )d ⇛ n = ত঱ল ঩দ − ধাযায n েভ ঩রদয ঳ভরি = * (n− )d+ … … … … এখ্ারন গুরনািয ধাযারিয, প্রথভ ঩দ = a ঳াধাযণ অনু঩াে r = রদ্বেীয় ঩দ প্রথভ ঩দ ঩দ ঳ংখ্যা = n ধাযায n েভ ঩দ = ×
  • 8. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com    r >0 ফা 1 অথযাৎ অনু঩াে r ধনাত্নক ঩ূনয ঳ংখ্যা ঴রর, ধাযায n েভ ঩রদয ঳ভরি ×  r < 0 ফা 1 অথযাৎ অনু঩াে r ঋনাত্নক ফা বগ্াং঱ (.1 -.9 )঳ংখ্যা ঴রর, ধাযায n েভ ঩রদয ঳ভরি ×  মখ্ন -1<r<1 ঴রর , এফং n→ ঴রর ধাযায n েভ ঩রদয ঳ভরি ধাযায তমাগপর ফা ঳ভরি = ধাযারে ঩রদয ঳ংখ্যা = n ধাযায n েভ ঩দ = ত঱ল ঩দ  1 ……………… n ⇛ = ( )  1 5 7 ……………… ( − ) েভ ঩দ ত঱ল ঩দ ⇛ = (঩দ঳ংখ্যা) =  … … … … … ⇛ = × n(n-1)(2n+1)  ( ) … … … … … … … ⇛ = −  … … … … … … … … … ⇛ = ( ) = * ( ) +
  • 9. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com  1, 4, 9, 16……………. ⇒ 5,∵ 5 ] 1 , 9 , 25, 49, 81 ………… ⇒ ,∵ 5 7 9 রফরজ্াড় ঳ংখ্যা ]  9 36 81 144 …….. ⇒ 5,∵ ( ) ( ) ]  81, 27, …. 3, 1 ⇒ 9 ,∵ ]  1, 2, 3, 5, 8 , 13 , 21 , 34……. ⇒ 55[∵ তম তকাণ ঩দ = োয ঩ুরফযয দুরি ঩রদয ঳ভরি ]  8, 11, 17, 29, 53,….. ⇒ 101 [∵8, 8+(11-8),11+(17-11), …]  1, 3, 6, 10, 15, 21,…. ⇒ 28 [∵ 1,(1+2),(3+3),(6+4), (10+5)]  2, 8, 18, 32,…… ⇒ 50 [∵ 2,(2+6),(8+6+4),(18+6+4+4), (32+6+4+4+4)]  2, 4, 8, 14, 22, 32…. ⇒44 [∵ 2,(2+2),(4+2+2),(8+2+2+2), (14+2+2+2+2)]  0, 5, 12, 21, 32….. ⇒ 45 [∵ 0,(0+5),(5+5+2),(12+5+2+2), (21+5+2+2+2)]  13, 17, 25, 41,….. ⇒ 73 [∵ 13,(13+22 ),(17+23 ),(25+24 ), (41+25 )]  5, 7, 11, 19,….. ⇒ 5 [∵ 5,(5+21)(7+22 ),(11+23 ),(19+24 )]  8 … ⇒ [∵ 4,(4+21)(6+22 ),(10+23 ),(18+24 )]  3, 6, 4, 9, 5, 12, 6,…. ⇒ 5 ,∵ t1:t3:t5:t7 ⇒ 5 | t2:t4:t6:t8 ⇒ 9 5-  8 9 … ⇒ 7 ,∵ (t1 +4),(t2+8)(t3+4)(t4+8)]  7 5 5 8 …… ⇒ 9 ,∵ t3:t5:t7 ⇒ ( 7-2),(27-4),(27-6),(27-8)| t4:t6:t8 ⇒ (5 ) (5 ) (5 9)-
  • 10. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com 0, 9, 17, 24…35, 39, 42 ….⇒  5 8 … ⇒ 1, 3, 6 9 5 … ⇒ 8  7 … ⇒  7 5 … ⇒  7 9 … 5 ⇒  … 9 ⇒  7 8 5 5 9…… ⇒ 7  … ⇒  7 5 9 7 … ⇒ 5 15, 13, 12, 11, 9, 9.. ⇒  7 8 8 ⇒ 7  8 5 8 … ⇒ 9  9 7 5 8 … ⇒  9 5 7 … ⇒ 99  5 ⇒ 7  5 7 … ⇒ 7  5 8 7 … ⇒ 8  9 7 … 5 5 ⇒ 8 21, 18, 9 7 … ⇒  8 5 5 9 … ⇒  5 … ⇒ 9  7 7 5 ⇒ 5  5 9 5 …⇒ 5  5 … ⇒ 7  7 8 8 8 … ⇒ 8 3, 7, 28, 32, 8, 12, 48, … ⇒5
  • 11. Want more Updates  http://facebook.com/tanbir.ebooks facebook /gmail/skype: - http://tanbircox.blogspot.com ইন্টাযরনি ঴রে ঳ংগ্র঴ীে  http://techtunes.com.bd/tuner/tanbir_cox  http://tunerpage.com/archives/author/tanbir_cox  http://somewhereinblog.net/tanbircox  http://pchelplinebd.com/archives/author/tanbir_cox  http://prothom-aloblog.com/blog/tanbir_cox http://facebook.com/tanbir.cox http://facebook.com/tanbir.ebooks http://tanbircox.blogspot.com