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If the system of following equations ls consistent then flnd solution x+y+z = 6 Sx -2y -22 = 9 Sx +y + 2z = 13

Posted by Rahul Kathuria 3 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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solve the differential equation dy/dx+2y=xex

Posted by Sabhyata Dhawan 3 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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How many reflexive relations are possible in set A={a,b,c,d}.

Posted by Keshav Bhagat 3 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Premraj Verma 3 years, 11 months ago

Since n=4 Therefore, no. Of possible reflexive relations= 2^(n(n-1) =2^(4(4-1)=2^12=4096

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Simran Simran 3 years, 11 months ago

4 {(a, a), (b, b), (c, c), (d, d) }

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State whether the function f (x)=x^2 from R to R is one-one or many-one.

Posted by Keshav Bhagat 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Premraj Verma 3 years, 11 months ago

Many one Because f(-1)=f(1)=1 Similarly f(-5)=f(5)=25

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Prove that the semi-vertical angle of the right circular cone of given volume and least curved surface area is cot–1 √2.

Posted by Sankara Narayanan 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Seth 3 years, 11 months 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

Let A be the semi vertical angle of the cone.

Cot A =

Cot A=

Hence proved.

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Does ex-7.7 deleted from our syllabus ?

Posted by ?????? ???? . 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Seth 3 years, 11 months 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

2Thank You

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Cbse maths reduce portion class 12

Posted by Vignesh Babu 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Seth 3 years, 11 months 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

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Solve the differential equation , (1 + e2x) d y + (1 + y2) e x d x = 0 , given that when x = 0 , y =

Posted by Yash Goyal 3 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Reduce syllabus of 10th class all subjects..............???

Posted by Preeti Yadav 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Seth 3 years, 10 months 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.

Click on the respective links:

<font color="#FF6600"><font style="box-sizing: border-box;">Revised Curriculum for the Academic Year 2020-21</font></font>

<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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Is the relation R in A={3,4,5}defined as R={(3,3),(4,4),(5,5)} transitive?

Posted by Aman Payal 3 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Vaibhav Pandey 3 years, 11 months ago

Noo it is not transitive

1Thank You

Sneha Panwar 3 years, 11 months ago

No as {3,4}, {4,5} and {3,5} does not belong to R

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Which chapter comes under calculus

Posted by Akash Kumar 3 years, 11 months ago

CBSE > Class 12 > Mathematics

3 answers

Akash Kumar 3 years, 9 months ago

Thanks

1Thank You

Pinky Pinky 3 years, 11 months ago

Continuity and differentinability Application of derivative Integrals Application of integrals Differential equations

1Thank You

Gurpreet Kaur 3 years, 11 months ago

Gsueve

1Thank You

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I need help

Posted by Parth Saxena 3 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Vignesh Babu 3 years, 11 months ago

???

1Thank You

Sneha Panwar 3 years, 11 months ago

Yes please tell

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Reflexive function

Posted by Pooja Jaat 3 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Pooja Jaat 3 years, 11 months ago

Thanks

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Yogita Ingle 3 years, 11 months 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

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Find log 3x/3x-1 dx

Posted by Nishant Kumar 3 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Swathi Manogaran 3 years, 11 months ago

Xlog3+ x(logx-1) - xlog(x-1) +x + 1/3 log(3x-1) + c

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Aryan Saini 3 years, 11 months ago

3Thank You

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Cbse Maths reduced portion ?

Posted by Vignesh Babu 3 years, 11 months ago

CBSE > Class 12 > Mathematics

3 answers

Vignesh Babu 3 years, 11 months ago

Want 12th reduce portion

0Thank You

Vignesh Babu 3 years, 11 months ago

This is 10th

0Thank You

Gaurav Seth 3 years, 11 months 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

2Thank You

ANSWER

Integrate e^x(1+sinx/1+cosx)dx

Posted by Sanya Mahajan 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Swathi Manogaran 3 years, 11 months ago

Formula Integral e^x[f(x)+f'(x)]dx=e^xf(x)+c Inte^x((1/1+cosx)+(sinx/1+cosx))dx Since (sinx/1+cosx)=f(x) (1/1+cosx)=f'(x) The solution is e^x(sinx/1+cosx)+c

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How can I become a topper of my class

Posted by Riddam Riddam 3 years, 11 months ago

CBSE > Class 12 > Mathematics

5 answers

Vignesh Babu 3 years, 11 months ago

No need to get topper..... Ok But I am topper ?

1Thank You

Pooja . 3 years, 11 months ago

Study till u can!!

1Thank You

Dhino Kevin 3 years, 11 months ago

try smart work if you failed to do hardwork

4Thank You

Kai Pocha Lofer 3 years, 11 months ago

Go and study raa,DO OR TRY

1Thank You

Prachi Maithil 3 years, 11 months ago

Study consistently... This will surely make you topper...

2Thank You

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Write the direction cosines of the line x=2-2s y= 3+s z= 4-5s

Posted by Ani Reji 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Kai Pocha Lofer 3 years, 11 months ago

#1 Assume s=1 X=2-2(s) y=3+(s) z=4-5(s) X=2-2(1) y=3+(1) z=4-5(1) X=0 y=4 z=-1 #2 assume s=0 Do the step as same

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What is the principal value of Cos inverse cos(2π\3)+ sin inverse sin(2π\3/)

Posted by Sonu Kumar 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Seth 3 years, 11 months ago

Q u e s t i o n : What is the principal value of cos^-1 ( cos 2π/3) + sin^-1 ( sin 2π/3) ?

A n s w e r :

cos^-1 ( cos 2π/3) + sin^-1 ( sin 2π/3)

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ANSWER

643360

Posted by Rajat Rajpoot 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Dhino Kevin 3 years, 11 months ago

123456

2Thank You

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R:{(a,b):a<b}is

Posted by Sonu Kumar 3 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Check whether the relation R in the set Z of integers defined as R = {(?,?)∶ ?+? is "divisible by 4"} is reflexive, symmetric or transitive. Write the equivalence class containing 0 i.e. [0].

Posted by Jessica Arul 3 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Pooja Jaat 3 years, 11 months ago

This relation will be equilence

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Jatin Jarewal 3 years, 11 months ago

This relation will be a equivalence relation

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If x=t²and y=t³ find second order derivative

Posted by Sneha Pradhan 3 years, 11 months ago

CBSE > Class 12 > Mathematics

5 answers

Tanish Saini 3 years, 11 months ago

3/2

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Rahul Yadav 3 years, 11 months ago

Sure this ans is right

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Priya Singh 3 years, 11 months ago

dx/ dt= 2t, dy/dt= 3t² dy/dx= 3t.t/2t=3t/2 d2y/dx²=3/2 ans

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Rahul Yadav 3 years, 11 months ago

Hii

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Rahul Yadav 3 years, 11 months ago

3/5*t

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How get all the formula of mathematics

Posted by Rohit Rawat 3 years, 11 months ago

CBSE > Class 12 > Mathematics

3 answers

Dhino Kevin 3 years, 11 months ago

prepare a handbook

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Rahul Yadav 3 years, 11 months ago

Firstly you complete all chapters

2Thank You

Pragya Jain 3 years, 11 months ago

Try and study ncert :)

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Show that the following expression can be written as the square of a real number:E (x) = (x + 3x) (x + 3x 8) +16

Posted by Anukriti . 3 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

If A is 3X3 non singular matrix. Prove that A inverse =1by modulus of A (adj. A )

Posted by Perveena Tm 3 years, 11 months ago

CBSE > Class 12 > Mathematics

0 answers

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Let R be the equivalence relation in the set A={ 0,1,2,3,4,5} given by R={(a,b): 2 divides (a−?)}. Write the equivalence class [1].

Posted by Sayonika Pal 3 years, 11 months ago

CBSE > Class 12 > Mathematics

2 answers

Sumit Kumar 3 years, 11 months ago

Hii

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Yogita Ingle 3 years, 11 months ago

Set A={0,1,2,3,4,5}

R be the equivalence relation on A.

Set R={(a,b)2divides(a−b)}

We have to find equivalnce class [0]

To find equivalence class {0},put b=0

⇒a−0 is multiple of 2 .

⇒ a is multiple of 2.

Multiples of 2 in given set are 0,2 and 4 .

Hence equivalence class {0}={0,2,4}

1Thank You

ANSWER

Integrate x^3 - x^2+x-1÷x-1 dx

Posted by Krishna Rajesh 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Ardra T Aji 3 years, 11 months ago

X^2(x-1) + (x-1) ÷( x-1) .dx (x-1)[x^2+1]÷(x-1) .dx (x-1) in the numerator and denominator cancels and u r left with integral (x^2+1).dx =X^3÷3 + x = x^3 +3xwhole divided by x. + Constant

1Thank You

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Integerate(5x²)dx/x²+4x+3

Posted by ?????? ???? . 3 years, 11 months ago

CBSE > Class 12 > Mathematics