Maths_Week 4_Activity Assignment 1

[Owais Shaikh]

For the function y=x2+10x+1, determine whether y has a minimum or maximum value and identify it from the options given below.

 a) Maximum value -24

 b) Minimum value -24

 c) Maximum value 76

 d) Neither maximum nor minimum value exists

Here I got axis of symmetry (i.e x = - 5). If we input the value x = 0, then we get Y as 1 which also forms the vertex. Y = - 24 does not form the vertex as it lies in the 3rd quadrant. Therefore the none of the options satisfy the answer. I want to know how y can be determined as maximum or minimum. 

[Debajyoti Biswas]

Please go through the lecture videos. It seems from your methods that some review of week 4 lectures is necessary.

[Anand Iyer]

Substitute x=-5 into the equation, and get y.  This is the minimum value.  

This curve opens upwards and only has a minimum value.

[PRAKHAR KHATRI]

Another thing is that the maths teacher is a little bit confused about what he is teaching. he could barely teach without looking at the screen and instead of getting the concept clear he is making it more complicated. I don't think he has much experience to teach at all. Kindly look wisely his videos, instead of making concept clear, he's getting puzzeled only in what he is teaching.

Thanks

[Owais Shaikh]

Yes Sir. I checked out the next lecture in Week 4 and got some clues on how to solve this one. 

On Monday, November 2, 2020 at 1:43:01 PM UTC+5:30 deba...@onlinedegree.iitm.ac.in wrote: