Every professor at IITM has a very unique skill! If Prof. Madhavan teaches maths intuitively, Prof.Neelesh, teaches maths in a very simple and concise manner. Really enjoying and learning Mathematics with full excitement , for the first time. Thank you Professors and Thank you IITM.

x coordinate is not -3 its +3

I think PW has set our standards too high. Not to be mean or anything but this has to be how most college professors teach. Coaching classes have made us expectant for better lectures.

@skibidi_universal

19 күн бұрын

Ya spoon feeding ( feels offensive, sorry 😊)

Y sir ka mujhe kuch samaj ku nahi aa raha 😭

can we also use derivatives and maxima and minima to find the values?

@insane4ms529

Жыл бұрын

Yes but u need to do double derivative to check maxima or minima

I couldn't understand sir. why have u used x there ? U could could have used 40-4 and 500-10 only, correct?

@jvbindhu91

Жыл бұрын

every time 4 rs raised, 10 person decreased, 4up 10 down,8 up,20 down, 12 up 30 down... clearly changes everytime in multiples of 4 and 10.. so 4x and 10x...

Thank you sir

How do we get 36k ?

@abhinavchaitanya5769

9 ай бұрын

Substitute 20 in The function .

plse sir don't use black background ......

I do have doubt in that. In the case why 40+4x? we can use 40+x right? i.e. the equation becomes I=(500-10x)(40+x) where x = 4rupees.

@saunakroychowdhury5990

Жыл бұрын

That would mean you are fixing the value of x, but x is a variable not constant. That is x can take any values other than 4

@anishsarkar726

Жыл бұрын

Here x denotes the number of times the fare is hiked...and each time the fare is hiked by 4 rupees. So I think the equation that was shown in the video was correct In your case if you take x = 4 that essentially means that the fare is hiked only one time. I.e the function that we will get will be a linear one. Therefore in that case there should be no concept of maximization or minimization. I hope I was clear

@insane4ms529

Жыл бұрын

No

@sibidr

9 ай бұрын

x should be 1 unit, 4 units hike in fare translates to 10 units reduction in passengers. The rest of equation becomes clear.

In the example of bus fair... there is written 'a loss of 10 custmers per day for each fair rise'... I think it sholuld be 'a loss of 10 custmers for each fair rise'...per day is not going with the question. Correct me if I am wrong🙏

@ManishSingh-tz8dk

Жыл бұрын

Please tell me how did this 36000 came to exist please i m a noob

@believer930

Жыл бұрын

@@ManishSingh-tz8dk its a problem of maximization, find where the value of equation/function becomes maximum.... I recommend watch the video again and then try to solve on your own...solve more such problems for practice...👍

@ManishSingh-tz8dk

Жыл бұрын

Ok bro

@shiva8913

Жыл бұрын

@@ManishSingh-tz8dk by substituting the value of x=20(we get) in the equation y=-40x²+1600x+20000, then we get y =36000

@saunakroychowdhury5990

Жыл бұрын

True. The per day is there only because initially it used to serve 500 customers per day, now 300 customers per day

change in y upon change in x

the x coordinate of the vertex in the first example is actually 3 and not -3

@ashokchoudhary3789

Жыл бұрын

0:27

@techfor-you2886

Жыл бұрын

Correct

Not clear😭

In the first example the value is 3,not -3

Thanks to everyone whoever suggested to just differetiate it and get the ans. I was really confused with this rubbish lecture.

Great sir

Man what a boring lecture

@VasanthSm-rj8rr

Ай бұрын

HAVE YOU CLEARED QUALIFER