Why -2 x -3 = 15 | क्यों इतने अनोखे होते है -ve number | why negative times negative is positive
ฝัง
- เผยแพร่เมื่อ 29 ส.ค. 2024
- In the very beginning, humans invented natural numbers (or is it that they discovered them, or is it both) for the purpose of counting and measurement. One can imagine a scenario where early human needed numbers to keep a tab on his flock of cattle or horses. Cave paintings by early humans show us that they used to keep a score of their kills during their various hunting expeditions by painting lines on the walls of the caves they used to dwell in or by etching notches/lines on dead animal bones [1].
When humans started living in groups or tribes and there was a conflict between two tribes/groups the strategist/chieftain needed to compare the number of fight worthy men in both the tribes to decide whether it is wise to fight the battle or make a truce or make good a retreat.
Addition
As the human population grew and it started living in communities and settling in villages or small towns, so did the number of live stock and other things in its possession. People started exchanging or bartering things. Let us say a tribe chieftain wants to know the total of all livestock/cattle or horses they have at all the stables in the village. Or a General wants to know the total number of guards present at all the gates or watch towers of a fortification or a chief wanting to know the population of his tribe after merger with various small groups or after a split. Simple counting of things became tedious and time consuming, this scenario warranted the development of a method/algorithm to aid counting. These led to the development of Addition as an aid or extension to counting. The development of addition also led to the development of Subtraction as an inverse operation.
Multiplication
Soon people found that many times they were adding the same/equal numbers repeated times. You can imagine a scenario that a father, Shanti Prasad wants to buy 6 apples for each of his five children. He must add 6, five times to know the total number of apples he needs to buy from the fruit vendor. Hence Multiplication was developed as an extension of addition. Division was developed as an inverse operation to multiplication. You can visualize the multiplication process in the present example as shown in figure 1.
6 apples / child x 5 children = 30 apples
As human civilizations evolved, they started living in cities; trade and commerce grew. Arithmetic was used to keep accounts, calculate taxes, measure areas and volumes. Algebra evolved in ancient and medieval India to deal with problems involving unknown quantities. In algebra situations arose when early mathematicians got perplexed or hit a stone wall. For e.g.
X + 5 = 2
Hence, X = 2 - 5
Early mathematicians used to wonder, how can a larger quantity be subtracted from a smaller quantity? Indian mathematicians found a way to solve such equations by inventing negative numbers.
Though earlier Indian mathematicians may have worked with negative numbers, it was Brahmagupta who first wrote about the rules for doing arithmetic with negative numbers in his book Brahmasphutasiddhanta (The Opening of the Universe), in 628.
He also gives arithmetical rules in terms of fortunes (positive numbers) and debts (negative numbers):
A debt subtracted from zero is a fortune.
A fortune subtracted from zero is a debt.
The product or quotient of two fortunes is one fortune.
The product or quotient of two debts is one fortune.
The product or quotient of a debt and a fortune is a debt.
The product or quotient of a fortune and a debt is a debt.
We can imagine a scenario wherein a man returns home and tells his wife that he lost 5 silver coins at the gambling den. His wife is puzzled, how can he lose 5 coins when he had only 2. The husband clarifies that not only did he lose the 2 silver coins he had but also the 3 silver coins that he had borrowed from his friend. Hence he is now in debt of 3 silver coins.
i.e. 2 - 5 = -3
Twelfth century A.D. Indian mathematician, Bhaskaracharya also used to consider negative quantities as debt (ऋण) or losses [2]. Till the seventeenth century A.D. some European mathematicians used to consider negative numbers as absurd and resisted to accept their existence [3].
In other words the man will have to earn 5 silver coins to pay off his debt and regain his earlier financial status.
-3 + 5 = -3 + (3 + 2) = -3 + 3 + 2 = 2
Also, x (debt) + 5 = 2
Hence, x = 2 - 5 = -3
Now to know more watch out this full video.
I hope you will enjoy this.
Thanks for watching.
Social accounts link
Instagram- / scienceandmyths
Facebook Page- / scienceandmyths
Why -2 x -3 = 15 | क्यों इतने अनोखे होते है -ve number | why negative times negative is positive
FAIR-USE COPYRIGHT DISCLAIMER This video is meant for Educational/Inspirational purpose only. We do not own any copyrights, all the rights go to their respective owners. The sole purpose of this video is to inspire, empower and educate the viewers.
i've watched every single video from this channel.....i'm just obsessed with ur work and knowledge!
Thanks for your appreciation😊❤️
Me too
Actually I have watched his every videos twice 😅
Thora jyada ho gya
@@user-rg3co2yk7e wow bro
It seems to see this channel that knowledge is only with a few rare people.
Great Work bro 👌
-2x-3=15 ❌
-5x-3=15 ✅
-2x -3=15 then x=-9
@@Dilsedesi574 🙏🙏hey prabhu
@@ASG9282 kyon kya हुई?
😂@@Dilsedesi574
Usne x nhi multipy kiya hain @@Dilsedesi574
This man created a problem for me which was never existed
😂😂😂 ab chain nahi aa raha 😂😂
What is problem?
😂😂😂
Kya bhai
Kis kis ko math pasand hai wah like 👍👍👍 kare
Yahi to mai itne dino se soch rahi thi aur ise samajhne ki koshish kar rahi thi exact yahi jo aap bata rahe ho thank you so much samjhane ki liye yahi question mere dimag me kai dino se ghoom raha tha. Atleast kisi ne to ise samjha aur mujhe samjha diya thanks a lots.
This channel literally deserves much and much views your work is very excellent
Glad you think so!
Only channel I love the most❤
Thankyou bro😊
@@Scienceandmyths th-cam.com/video/RYw9e942ZbA/w-d-xo.htmlsi=ReTbZZ4FCFcIbslG what is about??
@@Scienceandmyths plesss reply
@@Scienceandmyths plesss reply
Ese hi vdo or banaya karo
Very understandable
Yes bro
Amazing! Your videos are really inspiring. I became a science enthusiast just because of you. I am watching your videos from very beginning.
Finally I found this channel after 6 months.
Your videos open my mind.
i am medical student but i intersted in math because of you
Video bohot let ate he apks pls jaldi laya karo😅
Very big doubt solved
Thank you very much
❤watching your videos 2020
From my class 9th
Please sir post regularly I really love to gain the knowledge which was not taught by my teachers
The way you explain higher levels physics is absolutely charming 😊
Huge love and Respect for the person ❤
Thanks for the appreciation ❤️😊
I hope you to get a little bit more consistent on your channel. BTW i really like this video and concepts shown in this video
I will try my best
I myself is a teacher, today I learnt a lot from you, thank you very much...
Glad to hear that
Miss you lot bro come after 3 years I am not getting recommendations of your channel and my notification was of suddenly remembered your channel and name come here
U really point something serious and your deep thinking really awesome
Bhai aap ki video dekhne me jitna asan lagti hae utna hi muskil samjhne me
Lekin ye video sajhgya😊
The voice is just mind blowing 🤯
Nice information brother ❤
Thanks
Bro you're the best youtuber,
Ayse contents mAine aj tk kahin nhi dekhe
Bhai tmhe scientist hona chahiye tha
#LovefromKashmir ❤
घने दिन में विडियो आईं हैं
excilant brother
i think this type of algebra is usually called abstract algebra.
please, make a video about higher degree polynomial
Your explanation very well ❤❤❤😊
Thanks
You always surprises me with your knowledge. I wonder what might be its range . Can you please make a video on 'Tensor' and how it is different from the vectors.
Love you sir from Pakistan
Sir your videos made me Addational Sir I am Everyday watch your videos
You voice and backgroud music so amazing
Thanks a lot bro
Can you please make video on TAYLOR SERIES 🙏🙏
Science and Myth ❌
Science and Math ✅
😂
Your explanation and voice is so amazing ❤❤❤
Who tried to find value of x
Nice video
Love from jharkhand adivasi boy❤❤
I wish you were teacher of my class 😢😢
Brother i am impressed by your knowledge and pls upload more maths related proof videos 🎉🎉
Sure I will
Love you bro ❤
Amazing video ❤ please make videos on Probability Theory...😊😊
Sir
2×3=0+2+2+2
And
2×(-3)=0-2-2-2
Then
(-2)×(-3)=0-(-2)-(-2)-(-2)
From ancient Indian explanation of multiplication
hey !
#scienceandmyths, suggest some another youtube channel that can help us to understand this world .
Mst math ka explanation karte ho
superb sir 🙏
Wonderful ❤❤❤
Your videos aee lit
can you plzzz make an video on what a indian student learnt till clas 10th in physics ad math subject? plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Bro please complete the seven Millennium Prize Problems series by explaining the Birch and Swinnerton-Dyer conjecture
Jisko samaj nahi aya yo like kare😂
😂😂 same bro .... from Pakistan
let (a1,b1) and (a2,b2) be the ordered pair of (a,b) such that a^2+b^2 = 2017(a-b). find the largest prime number which exactly divide a1+b1+a2+b2-1000
Sir please please solve this question it is request
😮
Bhai kam se kam week 1 video loa . Aap kaafi samay ke baad late ho. But video bahut mazaa laga ❤❤❤
x = -9 😂😂😂
I also think that 😂😅😅...
I hve watch after 2year
Oo bhai itne din baad video pls uploads quickly ❤😢😅😊
Well done brother!
Aapka channel check out karne ke bad lagta ki mujhe math se pyar Ho jayega Varna math mujhe pasant nhi
👋 sir,😊
Hii Sir,,
Make some videos on chemistry concepts.......
Please
Please
Please
Please
Please
Please
Please
Please........
nice content
Science and myths 🙂🙏
Please....Ramanujan's lost notebooks se koi topic par video banaiye🙏
Precticalaly proof kariye
-*-= + kaise
Algebra math hypothesis concept 😇
2*-2=-4
2*2= 4 can -4 ?
When -2*-2= 4 ?
-2*2= -4 then 4?
Why do you post videos so late? Please bro jaldi post kara karoo, bahut miss kartee hai appko. 😊😊😊😊
4:14 how? is it jumping without considering 1 / -1? can someone please help
❤
Why a ki power 1 is zero how I can prove it without using the log . Please suggest me
can you make one short video on ring set, please
pray for Bangladesh 🇧🇩 student 🥺 please
6:45
Hey bro i am asking this question in every video
What is the bgm name in this time stamp please tellllll
Its hears very peace 🕊️
Its not" history of time" song please chek karke bata do ek baar 😢
-2x-3=15
Mana x=-9
-2(-9)-3
18-3=15
App maths ka course launch kar dijiya matlb jaise india me sab teacher padhte hain waise nahin apne andaj me jaise video banate ho usi trah ka higher mathematics ki video kyoki koi bhi youtuber nhin hai india me aaj 🙏🙏🙏🙏🙏🙏🙏
Sir is it ring topology?
Sir ak baar 12th class physics ke upar video bnao
Discreate Mathematics ❤
how calculator calculate ?
Using Programmes
6:35 this music title . Plz reply
Fermann last theorem ka proof 🧾 ke video bana do kese andrew ne uus ko proff kiya please 🥺
Qoe😮
Ma sari videos dekhta hou but Math system kabhi samaj hi nahi aya muje
-2*-3=15❌
-2*-3=2*3✅
Aap a times zero to dono side se cut hi nhi kar skte kyuki apni indirectly 0/0 ko one kar diya
plzzzzzzzzzzzzzzzzzzzzzz reply admin
Aapto python programming language jaisi jankari de rahe ho aesa method mathmatics problem solve karne ke liye python me use kiya jata hai
Baki Sav thik hai, car wali example samjha nehi
वाह !
-2×(-3)=6 ❎
-2×(-3)=15 ✅
Is there any proof of -b. 0=0
Didn't know -2*-3 was 15
Acha hy ye youtube hy yaha video samj nahi aya to comments me jawab dhund skte hy ..... Insta ka to smj nahi ata ulta Comments padhne jaye to waha Br. GD bkshi ki yadd aa jati hy 😂😂😂
ab me kuch bolu to vivad ho jayega 😂
First
Bhai mujhe aapki video bahut pasand hai😊
मुझसे गलती से omr पर क्वेश्चन नंबर के गोले के नीचे नाखून की लंबाई के बराबर हल्का सा पेन चल गया था कोई प्रॉब्लम होगी क्या बता दीजिए😢😢😢
just take a tetanus and you will be alright
Problem to nhi hogi pr ab kr bhi kya skte ho
@@Scienceandmythsmy favourite TH-cam channel❤
@@Scienceandmyths पहले ही omr का इतना टेंशन है ऊपर से इतनी भारी इंग्लिश😩
kuch nhi hoga bro
6 hoga bhai
Yes bro I know
@@Scienceandmyths तो गलत क्यों लिखा??
@@Scienceandmyths किस्से वीडियो edit karte ho.
Hi do u remember me ?
IIT Jam ?
@@Scienceandmyths yes right
Where are you these days
@@Scienceandmyths struggling as usual days
I was not selected in any exams just facing failures again n again .....will see what will happen in next attempt
Don't loose hope just work failures are the part of life you will learn lot of things from them
Ap ka qualification kya hai?
....
Itna bekar samjhaya kuch smjh nhi aaya
oye thumbnail sahli kar le