Inequalities 4 | CAT Preparation 2024 | Algebra | Quantitative Aptitude
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- Опубліковано 11 кві 2019
- Advance Algebra by Ravi Prakash | Quantitative Aptitude for CAT 2024
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ERRATA : ------ Hi all, at 13:05 kindly cancel that "2001" on RHS with full LHS .. So answer would be "1" instead of "2"
Rodha.in is not working nor the app of rodha!..
Thnxx sir
Thank you sir
Thank you sir that's all I'm thinking
sir that i understood but how 1/1001+1/1002+1/1003........+1/3001 is > than 1. because the above in above statement thesign greater than is facing opposite side
Sir thank you for explaining such an hard topic in an easy way i was struggling with inequalities for long time but once i watched all your video on algebra in the end i was completely a different person and i had to say you are master of maths teaching
Can never thank you enough for all the efforts that you put in for us sir. If possible sir please upload the trigonometry videos again they are much needed!
Your video is very useful. The way you explain the concept of inequalities is good. Thanks
Great videos sir! Really appreciate what you are doing.
Sir, AM-GM-HM concept makes solving questions so much faster. Thank you. Also a humble request, please do upload trignometry videos again
Where are trigo videos 🥲🥲🥲!!!
@@unconventionalgurl Did you find it?
@@shubhanshisinghms7745 no videos for Trigno ...you can refer to some other material
@@chirayuchaplot7161 yess
Hey I'm a little confused with HM and Gm, I mean for example at 5.30 and at 16.00 why did he choose GM and not HM cause they were reciprocating terms right ? could you pls help me. Thank You in advance.
That was really helpful..thank you.
Thanks! Helped a lot.
Really helpful session, Sir.
Thanku sir
At 13:05, sir you made a mistake as in LHS 1001+3001/2 = 2001 which gets cancelled by 2001 in RHS and gives 1 not 2,,,,, although your answer is right:)
super concepts sir!!!
Great video.
Thank you Sir🙏
superrrr video sarr..lob u
the questions and the thought process involved are pure class! And you sir, you are classic!!
Thank You !!!!
Thanks 👍
Thank You Sir
Thank u sir ❤️
thers a small error in14:00 ,actually the values will be greater than 1 itself not 2, 4002/2 function is not performed in the method
So , i have a doubt . @16:27 we found the minimum value of the equation divided by x+4 as 25. o will the minimum value be same when we use the formula 4ac -b2/4a to find the minimum value and substitute x =-b/2a in the equation x+4
Sir, how are we selecting the comparison.... ie whether to compare AM with GM or HM.......
In 15:53 , on what basis are we comparing AM with GM
Sir have you added trignometry series??? Becoz i'm unable to find it in the playlist......
Please upload basics of trigonometry videos sir
what s means by when numbers r equal, AM >GM
I Think Modulus is missing in the inequalities topic
I don't get the thing that how we can take 25.5^50 as (50+1)/2 and 50! as (1x2x3___x50) ^(1/50) can you please explain sir?
16:33 cant we use x+1/x in (k+13+36/x))min
????
Sir please upload basics of trigonometry videos
at 5:11 shouldn't it be AM and HM? I mean there is addition and reciprocal right ? can anyone pls explain why GM and not HM ?
sir please upload trigonometry videos again sir , you are our god
Where is modulus in this playlist????
Sir videos are very helpful. I am preparing through your videos only. Just need questions for practice please suggest source for material.
Thank you❤️
One telegram you can find alot of free material for practice
16:24
sir , instead of taking (k + 36/k) if we take (k + 1/k) and (1/35k) separately then we would get its value as 2 only .. assuming k is a very large number ( 2 + 0.000000... ) = 2
then final answer woud have been 13+2 =15 only
if k is a very large number, then k+1/k won't be equal to 2. It is only equal to 1 when k=1. You can't take two different values of k.
Y can't we take k+1/k =2 and then add 36 bcoz x+1/x is 2 right?
How come tan & cot is 1?
can anyone please provide me the link of "basics of trignometry" video.
Yes please do provide the link for basics of trigonometry video
at 9:30 and 12:10 sir has used AM formula as 1st term + last term / 2 . I have one doubt that it shall be N*[1st +last term]/2 bcoz if we consider here Am as sum of an AP with common diff of 1 than my stated thing holds true .
Pls help me if some one got me .
yeah actually same doubt here
@@IIM_life_by_Divya actually AM = (Sum of all terms)/N , therefore, if d=1 then AM = [N(N+1)/2]/N = (N+1)/2 Only, ie (first + last)/2
Why he is solving the Number system question in inequalities .....
16:27 shouldn't (k×36/k)^1/2 => 6 and not 12??
A HUMBLE REQUEST COULD YOU PLEASE UPLOAD THE TRIGNOMETRY VIDEOS AGAIN
YOU ARE THE BEST!
@Rodha sir can you please share the link of trigonometry video......
Any one helps me on when to use AM and GM and when to use GM and HM?
AM involves Addition, GM involves multiplication, and HM involves reciprocals.
can you pls tell me why at 16.10 we are using GM and not HM
Sir please inform the videos that you've deleted. We can't buy unacademy subscription. Let us know the topics so that we can search it from somewhere else
No videos are deleted. @Shradha
@@Rodha is 7 videos enough for inequalities sir??
Sir 1 to 50 are in AP so AM is calculated. But 1 to 50 are not in GP then how can we calculate GM
Sum of n natural nos is (n+1)/2
Since 1 to 50 is in AP so he used 1st+last term/2. That was his point.
13:05 mistake
Can anyone explain how (K.36/k)1/2 is 12?
k/k=1 sqrt of 36 is 6 and after multiplying 2 on both sides we'll get 12
@13:05, If a=1/1001 then in H.M formula 1/a=1001 (reciprocated) but sir kept unchanged,why??
a is not 1/1001, a= 1001, otherwise AM wouldn't be ryt.
what are you doing at 13:00 ?? how can AM of all these numbers be (1001+3001)/2 ? The AM is (1001+ 1002 + 1003+ ........ + 3001)/ 2001 ? is'nt it?
a shortcut method is there.
(1st and last term)/2 to get the AM of a sequence
At Question in 10:50 , its written 50! to the power 1/50 . Shouldn't it be power 1/2 ? Plz answer.
Okay So the answer is no. If you look at Formula of GM you'll realise that the square root of power in GM depends upon the number of terms . Since there were 50 terms the power will be 1/50.
we can geometric mean of any series or it has to be GP beacause of 1 to 50 numer are not GP@@shubhangsinha9616
why are we using GM instead of HM at 16.26
I have the same doubt, did anyone help you figure out ? if yes pls let me know
I cant find basics of trigonometry video...can you please help🥲🥲
i ll put
@@Rodha are the videos available now, sir?
@@Rodha sir pls put trigo videos
(K+36/k)min, here k is in reciprocal. Can't we put min value of k=2 therefore it would become 36+2=38 ?
A number and its reciprocal. Min value of k/36 + 36/k is 2.
No,
same doubt.... can anyone explain?
No...you can't write like this . because ... Their coefficient not 36.. it's has to be 36 in both k.... We can write 36k + 36/k = 2 not k+36/k =2
No
Aisa koi video sir ka he hi nahi basic of trigonometry.. Sir aise hi bolte he.. R else he deleted it🙂🙂
Sir, at 13:13 when you did HM, in the denominator shouldn't the terms be 1001 + 1002 + .... 3001 instead of 1/1001 + 1/1002 + .. 1/3001.
he has already answered
Wah bete...oscar doon kya??
@@anujjain9499 It was a genuine doubt at the time. Pls consider getting a life and not reply to a 2yr old comment. Thanks :)
@@adithya8 bro from which college you did your mba?
@@Dev-jp4rn xlri brother.
At 13:05 How can 2001 cancel 3001+1001 ? I can't find any logical explanation? Can you please explain it?
Hi, it's a small human error :) .. actually whole LHS should be cancelled with 2001.. so it's should be 1 instead of 2 on RHS finally
at @13:47 idc HOW HE IS CANCELLING 1001+3001 WITH 2001
1001+3001 = 4002 which is dividible by 2001 😂
Then how 2 ? Should be greater than 1, no? @@rupdasgupta2855
Edit: if any idea about trigno Material pls let me know
@@kavyapande4886 i think the answer should be opp....
This guy is teaching all topics other than inequalities.. 🤨
These are under inequalities only :)
@@Rodha Sir ur teaching is good but..first u have to teach basics after that u can go for advanced questions
@@vinayrj2766 from the first class, it's as basic it can be . Watch in a serial order
Actually sir in other platforms they teach smthing different in inequalities and their basics are also different
bhsi book le kaar phad le or buy unacademy subscripstion kitna padayaga banda yotube mai aur bhi jagah padata hai yeh banda