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Class - 10th, Ex - 1 Theorem 1.4(Real Numbers) NCERT CBSE prove root 2 irrational
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- Опубліковано 18 сер 2024
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Doston contradiction Ka MATLAB" Agar humne koi statement assume Kiya hai aur woh baad mein false proof Hoti hai""Usko hum contradiction kehte hain
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Co prime No.- aese pair of two numbers jinka sirf 1 factor hota hai pair of numbers jese (2,3)
(6,7)
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The proof is based on a technique called " Proof by contradiction "
so what???
Pucha tum sa 🤔
Oooo bhaiiii mujhe toh pata hi nahi thaaaaaa
Let, us assume that √2 is rational number
Let , √2 =a/b where a and b are co - prime
Squaring both side
(√2)² =(a/b)²
b² 2= a²/2
a² divisible by 2
a also divisible by 2
Let,a= 2m are from some integer m.
Squring both side
√2²=4m²/2
b²=4m²/2 then two se two times two kat jayega
b²/2= m²
So, our assumption is wrong a and b are co- prime is wrong
So, √2 is irrational
So, plz aap sab mujhe bataye kya isme kuch wrong hai kya, kya m yeh exam likh sakta hu plz bhot time laga hai ise likhne m plz everyone notice 🥺🥺❤❤
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Osm explanation sir,,,,
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sir thanks i actually missed my maths class and my teacher is kind of bad she is not reapiting it and then i searched on youtube and your video helped me a lot
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Same thing happened with me ,
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I want to know why this illogical things in our syllabus........and the main thing is every year cbse giving such common question in boards........i might be wrong that this is illogical there can be a logic in future classes.....but why now we has to study this type of shit 😭😭😭.......
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Same here
Contradiction means assuming it’s not true and proving what we have proved is wrong
Contradiction method is when we try to prove our statement wrong by proving actual one as right. As above in video, we proved our statement wrong as we decided that under root 2 is rational.
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Sir I don't understand why we are writing a and b as coprime. it's not necessary that every rational no should be coprime?????
Yes, every rational number is co-prime
That is the process of solving this type of Q. Rational no. can have C.F other than 1. Ex. 8/4
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विरोधाभास-contradiction
खंडन-contradict
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Bahut acche se answer raata rahe ho. Kab b koi milega concept wala
True bro...
Watch 'ranveer class 10’ video on this topic, it'll definitely help!!
Only 1 hour left for board exam 😢
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Sir please tell me why we let A and B as co-primes?
Because A and b has only one as factor
Sir But u told to assume it as a raional number, which is in form of a/b.
That means that it may be anything like 2/4 also ,so how could u say that its a co-prime?
A or b ko p/q bhi keh sakte ho
@@siddharajchauhan6626 ha bilkul but mera question differemt tha Mr
Abhishek if we take 2/4 as according to you then we suppose to simplify it in form 1/4 and make it as co-primes then carry on the steps
Sir it is ( So contradiction has risen )
Visit our channel for complete exercise solutions in easy language , we are covering complete class 10 maths on our channel
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