computer graphics is not as simple as I expected

I have seen video from National Programme on Technology Enhanced Learning about COMPUTER GRAPHICS. I confused that whether I was hearing a Mathematics class or computer graphics. Real mathematics is used to map bits from image to CRT( screen).

see link

computer graphics ... videos

GATE EC2003 question

Ans :
Number of Mesh = B - N + 1 where B = No of Branches
N = number of Nodes
Node equation = N - 1
where N = number of Nodes

here B = 7 , N = 4

so minium number of equation need to analyze the circuit is = N - 1 = 3

Qu(2):

The Laplace transform of of i(t) is given by
I(s) = 2 / s(1+s)
As t --> infinity, The value of i( t) tends to


Ans:
Inverse of I(s) ,
I(s) = 2/s -2/(1+s)
i(t) = 2 -2(e^-t) because L(1) = 1/s and L(e^-t .1) = 1/(S+1)
As t --> infinity ,
==> i(t) = 2 -2/(e^infinity)
==> i(t) = 2 - 2/infinity
== > i(t) = 2 because 2/infinity is zero

This is the answer I got. I am not sure about 2/infinity . ,,...

i don't know these answers are correct or not .. I didn't get key for GATE these question.

DIGITAL SIGNAL PROCESSING

I become a fan of Prof. S.C. Dutta Roy .....if you hear these videos then you will reach a new world. See some beautiful lectures ..

Brief Technical Biography of S C Dutta Roy

S C Dutta Roy , a Ph D from the Calcutta University, is currently an INSA Senior Scientist at the Electrical Engineering Department, IIT Delhi, where he served as a Professor for more than three decades. He has also held the positions of Head of the Department and Dean of Undergraduate Studies at IIT Delhi, and Visiting faculty positions at the University of Minnesota, USA ; University of Leeds, UK ; and the Iowa State University, USA. His research interests are in signal processing – analog as well as digital, and he has published extensively in IEEE, IEE and other professional journals of repute.

Professor Dutta Roy is a Fellow of the IEEE, the Acoustical Society of India, the Systems Society of India, and of all the Science and Engineering Academies of India, and is a Distinguished Fellow of the Institution of Electronics and Telecommunication Engineers (IETE), India. He has served on the Editorial Boards of a few IEEE and other prestigious international journals and all the national journals in his field. He received several prestigious national awards, including the Shanti Swarup Bhatnagar Prize, the Vikram Sarabhai Award and the Pandit Jawaharlal Nehru Award.

why derivatives ?

To find an approximation of one can do as follows.

1. Consider the function Hence, the problem is reduced to finding the value of f(25).
2. We have

   

3. According to linear approximation

   

4. The result, 2.926, lies fairly close to the actual value 2.924…

Read some interesting and basic mathematics.. http://en.wikipedia.org/wiki/Linear_approximation

LOST TOUCH WITH MATHS

Onam days I have tried some Laplace Transform ( which is commonly used in Network realization and ELECTRICAL circuits ) from mathematics text book. Then I realized the fact that even the basic integration methods like integration by parts and other haven't there in my mind. But the basic for mule in Laplace finished in onam days itself. Parallel y hearing online video classes ..... but it is like a drop of water in the sea....... I dont know where I can reach.

DREAM FIRST ... WORK FOR IT, YOU WILL GET

DREAM FIRST .. WORK FOR IT , YOU WILL GET

I believe these words.


Some of college friends motivating me for a Mtech. Really my mind is restless now.

WARNING

how fast or immediate i am starting study and How fastly and strongly i studies subjects will determine my score in GATE ......



I am feeling that Mtech in IIT( dream) is reachable ambition. But I haven't informed this to father. Most probably he will reject....(that is not a problem )
I informed to my brother....( i got half +ve approval from him).I need to work hard that was his advice.
Here(in chennai) the atmosphere is not favor to study .It is a challenge as well as thrill.
Getting a Btech admission in IIT is much harder than a MTech. Making a decision is very important because GATE is an all India exam. Even if it is simple compared to btech, students from all over india is participating in it.That much competition is there.

( this blog is exclusively to me)

SOMETHING YOU HAVE TO KNOW BEFORE PASSING OUT BTECH

Very strange classes. They analyzed it in a strange manner. I have completed two 'digital signal processing' lecture video and two electromagnetic theory. Before taking text book, this classes will surely help anyone who love to learn things without much effort. I haven't analyzed electronics before.
watch the video ....

http://www.nptel.iitm.ac.in/video.php?courseId=1009&sub=Electrical&sem=Semester%204