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Posted by Dushyant Vashisth 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
On July 7, HRD Minister Ramesh Pokhriyal announced a major CBSE syllabus reduction with 30% of the syllabus slashed for the year 2020-21 for classes 9 to 12 because of the reduction in classroom teaching time due to the Covid-19 pandemic and lockdown.
CBSE has rationalized the syllabus with the help of suggestions from NCERT and the same has been notified by a new CBSE notification as well.
Deleted syllabus of CBSE Class 12 Mathematics
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Gaurav Seth 5 years, 1 month ago
given function is ∫(x³ - )^⅓ x^5.dx
let (x³ - 1) = t , and x³ = (1 + t)
⇒3x² = dt/dx
⇒dx = dt/3x²
So, ∫(x³ - 1)^⅓ x^5 * dt/3x²
⇒1/3 ∫t^⅓ (1 + t) *dt
⇒1/3 ∫(t^⅓ + t^{4/3}).dt
⇒1/3 ∫t^{1/3}.dt + 1/3∫t^{4/3}.dt
⇒1/3 + 1/3
+ c
put the value of t in the above function,
⇒.
Posted by Gajendra Chaudhary 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
The region bounded by the parabola y2 = 16x and the line x = 4 is the area OACO
The area OACO is symmetrical about x-axis
Area of OACO = 2(Area of OAB)
Area of OACO =
Therefore, the required area is 128/3 sq. units
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Premraj Verma 5 years, 1 month ago
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Posted by Sankara Narayanan 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
Solution:
Let V be the given volume of cone.
V=Volume of cone =
h = Height of cone =
C=Curved surface area of cone = , where r is radius and l is slant height of cone.
C= , as l²= r²+ h²
For Maxima and Minima, derivative of C that is curved surface area should be equal to zero.
K=C²= π²r²(r²+h²)
K =
Differentiating both sides with respect to r
K' = 4π²r³ +
Putting , K'=0
=
h=
Let A be the semi vertical angle of the cone.
Cot A =
=
Cot A=
A=
Hence proved.

Posted by ?????? ???? . 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
On July 7, HRD Minister Ramesh Pokhriyal announced a major CBSE syllabus reduction with 30% of the syllabus slashed for the year 2020-21 for classes 9 to 12 because of the reduction in classroom teaching time due to the Covid-19 pandemic and lockdown.
CBSE has rationalized the syllabus with the help of suggestions from NCERT and the same has been notified by a new CBSE notification as well.
Deleted syllabus of CBSE Class 12 Mathematics
Posted by Vignesh Babu 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
HRD Minister Ramesh Nishank announced a major CBSE syllabus reduction for the new academic year 2020-21 on July 7 which was soon followed by an official notification by CBSE on the same.
Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.
The CBSE syllabus has been rationalized keeping intact the learning outcomes so that the core concepts of students can be retained.
Deleted syllabus of CBSE Class 12 Mathematics
D
Posted by Preeti Yadav 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.
The CBSE syllabus has been rationalized keeping intact the learning outcomes so that the core concepts of students can be retained.
CBSE stated in its notification that the deleted portions of the CBSE syllabus should not be considered for internal assessments or for the year-end board exams.
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<font color="#FF6600"><font style="box-sizing: border-box;">Revised Curriculum for the Academic Year 2020-21</font></font><div class="panel-group" id="accordion" style="margin-bottom:5px; padding:0px"> <div class="panel panel-default" style="border:1px solid #dddddd; margin-bottom:0px; border-radius:4px"> <div class="panel-heading" style="border-bottom:0px #dddddd; padding:10px 15px; border-top-left-radius:3px; border-top-right-radius:3px; border-top-color:#dddddd; border-right-color:#dddddd; border-left-color:#dddddd"><a data-toggle="collapse" href="http://cbseacademic.nic.in/Revisedcurriculum_2021.html#collapse2" style="box-sizing:border-box; color:inherit; text-decoration:none; display:block; font-weight:bold">Revised Secondary Curriculum (IX-X)</a></div> </div> <div class="panel panel-default" style="border:1px solid #dddddd; margin-bottom:0px; border-radius:4px; margin-top:5px"> <div class="panel-heading" style="border-bottom:0px #dddddd; padding:10px 15px; border-top-left-radius:3px; border-top-right-radius:3px; border-top-color:#dddddd; border-right-color:#dddddd; border-left-color:#dddddd"><a data-toggle="collapse" href="http://cbseacademic.nic.in/Revisedcurriculum_2021.html#collapse1" style="box-sizing:border-box; color:inherit; text-decoration:none; display:block; font-weight:bold">Revised Senior Secondary Curriculum (XI-XII)</a></div> </div> </div> |
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Yogita Ingle 5 years, 1 month ago
Reflexive Relation
A relation in a set A is called reflexive relation if (a,a) ∈ R for every element a ∈ A.
Example:.
Let A = {1, 2, 3, 4,5,6,7,8,9,10} and define R = {(a, b) | a divides b}
We saw that R was reflexive since every number divides itself
Let A = {1, 2, 3, 4,5,6,7,8,9,10} and define R ={(1,1),(2,2),(2,3),(3,2),(4,4)}
We saw that R is not reflexive since every number is not present in R
Posted by Nishant Kumar 5 years, 1 month ago
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Swathi Manogaran 5 years, 1 month ago
Posted by Vignesh Babu 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
HRD Minister Ramesh Nishank announced a major CBSE syllabus reduction for the new academic year 2020-21 on July 7 which was soon followed by an official notification by CBSE on the same.
Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.
Deleted syllabus of CBSE Class 10 Mathematics

Posted by Sanya Mahajan 5 years, 1 month ago
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Swathi Manogaran 5 years, 1 month ago

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