Discussion forum for Mathematics for Data Science I

Ok, thanks for the clarification. On Sat, Nov 21, 2020, 17:22 Shubham Maurya <shubhammaurya@

f IS the output. when you say f decreases in the given range, it means the output (not the input) of

Me also having same problem in week 4 of mathematics whenever I am solving the problems of activity I

Thanks! Regards, Smridhi On Wed, 18 Nov, 2020, 6:41 pm Vijender Singh, <viju...@gmail.com>

@nikhil kambli week 4 .Tutorial 7 On Thu, 19 Nov 2020, 14:00 Malabika Guha Mustafi, <malabikaguha@

Hi, Please follow the thread. https://groups.google.com/a/nptel.iitm.ac.in/g/ma1001-discuss/c/

Can you please check the lecture videos and solution tips? Depending on the sign of the coefficient

Yes differentiation is one way, also as shown in the lecture, if you verify for different points in

Hi, Answers to AQ are not available, if you have any specific question, please let us know here or in

We get , y= - square(b)/4a + c ( for maximum value or minimum value after putting x=-b/2a) as follows

At max or minimum point on the curve the slope will be Zero . At X=4 slope is Zero so it is minimum

Y=ax^2+bx+c slope =dy/dx = 2ax+b On Sunday, November 15, 2020 at 9:23:48 PM UTC+5:30 rakesh ky wrote:

Dear learner, Thank you Dharma for your explanation, please let us not get into calculus part (

what anand explained above is correct. For quadratic equation you will have two roots , if two roots

In tutorial, it is shown correct. For the condition that it touches x axis once implies that vertex

Please refer class 11 and 12 class maths for slope problems :) On Thursday, November 12, 2020 at 1:54

Thanks alot for this explanation. Regards Varada On Wednesday, 11 November 2020 at 19:12:03 UTC+5:30

Hello Subhajit sir/All, After much deliberation I figured the error. The understanding of slope of

ohh yes I got it. Thankyou. On Wednesday, November 11, 2020 at 12:24:59 PM UTC+5:30 deba...@

Assume toys deb had to be x So Ananya will have 20-x toys After Deb lost 3 toys he will have x-3 toys

It should not depend on the method chosen for solving the problem. I too worked out in the same way

Thanks Malabika and Anand, as all of us understand, it is a downward opening parabola and x-axis is

https://groups.google.com/a/nptel.iitm.ac.in/g/ma1001-discuss/c/_6sfuRzH-1w/m/GkSNGensAAAJ https://

For 4.1 third question put x=-b/2a (at vertex) {please go through lectures]. Here a is positive so it

Since Deb(D) and Ananya(A) bought 20 toys together , let us assume that the no. of toys bought by deb

Dear learner, In your explanation, you used wrong formula. The correct formula is 2ax+b. Best wishes

This is a maths question. Slope at a particular point is nothing but dy/dx value at that point. You

can you post this in math, with a better picture? The one you've attached isn't too readable

Got it. Thanks for clarifying. On Sunday, November 8, 2020 at 5:41:58 PM UTC+5:30 Malabika Guha

x is the month of the year so in vertex though you 'll get the fraction but convert it into