 
Students you can go to my playlist and watch my videos
here i have arranged my playlist topic wise
so you won't face any problem
as many students complain that we cannot find certain topics
so here you will find each and every video topic wise
so here the playlist is arranged completely you can watch all the videos here
 
hello students myself Dr. Gajendra Purohit and today
i bring a new topic for you all and students
whatever topics were there on numericals i have covered them all
but then also if you find any topic is left
you can comment  and tell me . Today I am starting a new topic
as many students
have commented that I have not uploaded this topic
so today I am going to teach this topic. In this topic
I will tell you that the curve
and how we calculate the length and this is called rectification
and the topic on rectification for bsc and engineering students
is very helpful and many questions
are asked in the exam on this topic plus the students
who are preparing for competitive exams like IIT-JAM , GATE
CSIR -NET or for school lectures first grade
so in  all these types of competitive exams
numericals and objective based questions are asked so students
you will understand all the content from the topic which I am explaining
and you can see all my old videos
by clicking on the I icon like  engineering mathematics , bsc and other competitive exams
and you can see  the related syllabus in my playlist
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don't forget to do the same
so length of curve known as rectification
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
so here I am teaching you rectification which means I am telling you the way to calculate the length
so if I apply this formula here
so I should get the value here so I will teach you how
we apply this
in the formula and how we calculate the value from the formula
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
so whatever formulas we are using
we should know the basic concepts for them and actually what are they
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
so students now you must have understood  and now i will tell you 2-3 questions
on this to make it more clear
 
 
 
 
 
 
 
 
 
 
 
So i want to tell you one thing that when to trace the curve and
when not to trace. So students if in any question, limit is given to you
and even function is given to you then directly put the formula
Automatically, you will get the ans there is no need to trace the curve but
see the second question
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
So students  the length of arc
based questions which i took in front you, apart from these there are two or three more questions
which are important but due to the length of the video
so i will tell you in the next video
that how to solve those questions so
students questions which i will take in my next video are very important that
are asked in bsc, engineering exams
every year within a time span of two years like questions based on asteroid
 
loop in which you have to make loop before curved rectification
then we will find it's length
Similarly there is question based on asteroid in which we have to find the length
and i will take two or three questions.Then in my next
video i will take polar curves like cardioids
as questions are asked like on calculating it's length
and based on them that I will take in the next video. So be with
me and do watch my next video
Thank you so much for watching my videos. I am getting a very good response
and your comments motivate me a lot. keep doing the same and
whenever I get time I do reply to your comments and
be with me. I am uploading a good content and will continue to do this in future
Thank you. Bye
