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Class 8 math lesson 16 (aljebra)
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Class 8 math lesson 16 (aljebra)
1.
গণিত ণিণিটাল ক্লাসে েবাইসে স্বাগতম
2.
ম োহোম্মদ রফিকুলইসলো প্রভোষক গফিত
ফিভোগ ম ট্রোপফলটনস্কু লএন্ড কট্লজ মেফিিঃঅষ্ ফিষয়িঃ গফিত অষধ্যোয়িঃষ্ঠ ক্লোসিঃ16 পফরফিফত
3.
4.
5.
পাঠ ঘ াষিাাঃ সরল
সহস ীকরি
6.
ণিখনফলাঃ স ীকরট্ির প্রফতস্থোপন
পদ্ধফত ও অষপনয়ন পদ্ধফত িযোখ্যো করট্ত পোরট্ি। দুই িলকফিফি্ সরল সহস ীকরট্ির স োধ্োন করট্ত পোরট্ি। গোফিফতক স সযোর সরল সহস ীকরি গঠনকট্র স োধ্োন করট্ত পোরট্ি। সরল সহস ীকরট্ির স োধ্োন মলখ্ফিট্ে মদখ্োট্ত পোরট্ি। মলখ্ফিট্ের সোহোট্যয সরল সহস ীকরট্ির স োধ্োন করট্ত পোরট্ি। এই পাঠ ঘিসষ ণিক্ষার্থীরা ...
7.
েরলেহেমীেরিাঃ িলট্কর োন দ্বোরো
একোফধ্ক স ীকরি ফসদ্ধ হট্ল, স ীকরিস ূহট্ক একট্ে সহস ীকরি িলো হয় এিং িলক একঘোতফিফি্ হট্ল সহস ীকরিট্ক সরল সহস ীকরি িট্ল। দুই িলকফিফি্ সরল সহস ীকরট্ির স োধ্োনিঃ দুই িলকফিফি্ দুইটি সরল স ীকরট্ির স োধ্োট্নর পদ্ধফতগুট্লোর ট্ধ্য ফনট্ির পদ্ধফত দুইটিরআট্লোিনো করো হট্লো : (১) প্রফতস্থোপন পদ্ধফত ( Method of Substitution ) (২) অষপনয়ন পদ্ধফত ( Method of Elimination )
8.
(১) প্রফতস্থোপনপদ্ধফতিঃ এই পদ্ধফতট্ত
আ রো ফনট্ির ধ্োপগুট্লো অষনুসরি কট্র স োধ্োন করট্ত পোফর : (ক) মযট্কোট্নো স ীকরি মেট্ক িলক দুইটিরএকটির োন অষপরটির োধ্যট্ প্রকোি করো। (খ্) অষপর স ীকরট্ি প্রোপ্ত িলট্কর োনটি স্থোপন কট্র এক িলকফিফি্ স ীকরি স োধ্োন করো। (গ) ফনিীত স োধ্োন প্রদত্তস ীকরি দুইটিরমযট্কোট্নো একটিট্তিফসট্য় অষপর িলট্কর োন ফনিণয় করো।
9.
(২)অষপনয়নপদ্ধফতিঃ এই পদ্ধফতট্ত ফনট্ির
ধ্োপগুট্লো অষনুসরি কট্র স োধ্োন করো যোয় : (ক) প্রদত্তউভয় স ীকরিট্ক এ ন দুইটি সংখ্যো িো রোফি দ্বোরো পৃেকভোট্ি গুি করট্ত হট্ি মযন মযট্কোট্নো একটিিলট্কর সহগ স োন হয়। (খ্) একটি িলট্কর সহগ স োন ও একই ফিহ্নফিফি্ হট্ল স ীকরি পরস্পর ফিট্য়োগ, অষনযেোয় মযোগ করট্ত হট্ি। ফিট্য়োগিলকৃ ত (িো মযোগিলকৃ ত) স ীকরিটি একটি এক িলকফিফি্ সরল স ীকরি হট্ি। (ঘ) সরল স ীকরি স োধ্োট্নর ফনয়ট্ িলকটির োন ফনিণয় করো। (ঙ) প্রোপ্ত িলট্কর োন প্রদত্তমযট্কোট্নো একটি স ীকরট্ি িফসট্য় অষপর িলট্কর োন ফনিণয় করো।
10.
পোঠদোন অষনুিীলনী:- ৬.১ প্রফতস্থোপনপদ্ধফতট্ত
স োধ্োনকর : 7। ax + by = ab bx + ay = ab ৯।ax − by = a − b ax + by = a + b
11.
bab y a x 12 6 111 yx ১০। 6 511 yx aba y b x 12 ১1।
12.
দলীয় কোজ 32 ba y b x a ১2। 1 yx
13.
মূলযায়নাঃ 8। ax −
by = ab bx − ay = ab
14.
বাণির োিাঃ ৯। ax
− by = a − b ax + by = a + b ,bab y a x 12 aba y b x 12 ১1।
15.
পোঠ স োফপ্ত েবাইসে
ধনযবাে
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