CBSE > Class 12 > Mathematics | CBSE Board | Homework Help

As the problem of Combination(Selection) the general formula for finding it will be:- nCr = n!/r! (n-r)! Similarly, 20c7= 20!/7! (20-7)! 20!/7!×13! Ans..

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Kya koi mujhe Maths k Sample papers Send kar skta hai...

Posted by Just Example 3 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Ronak Mor 3 years, 10 months ago

Yessss

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integral of x+sin x /1+cos x from 0 to π

Posted by Sadhana K 3 years, 10 months ago

CBSE > Class 12 > Mathematics

5 answers

Mahi Kumari 3 years, 10 months ago

Wait Mukti, I will again check this question and try to understood it.

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Mukti Sourava Mohapatra 3 years, 10 months ago

No sahil kumar question is correct .

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Mukti Sourava Mohapatra 3 years, 10 months ago

Write 1+cosx= 2 cos^2(x/2) Then (x+sinx)/(1+cosx )= (1/2)xsec^2(x/2) (apply integration by parts to evaluate) + sinx/2cos^2(x/2)(Apply sinx =2sin(x/2)cos(x/2) to evaluate)

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Mahi Kumari 3 years, 10 months ago

I think the question is reversed by mistake and it would be like "integration of function (1+cosx/ x+sinx) w.r.t x from limit 0 to π, so that we can able to substitute t = (x+sinx) and it's differential form would be (1+cosx). Check please.

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Prakhar Chouksey 3 years, 10 months ago

Substitute 1+cosx=t

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Show that the function F is in the set N, the set of natural numbers defined as f(x) =y=3x, is not onto

Posted by Sachin Samant 3 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Prakhar Chouksey 3 years, 10 months ago

It's a Bijeective function

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यह शब्द यह नहर में नहीं हैं

Posted by Shivank Garg 3 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Shivani Chaurasiya 3 years, 10 months ago

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Chap 12.6

Posted by Siya Kumari 3 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Kashish Agrawal 3 years, 10 months ago

What you want

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What is logorithamic function

Posted by Sadique Ansari 3 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Mukti Sourava Mohapatra 3 years, 10 months ago

Check ncert class 12 chp 5 Continuity and differentiability Section 5.4

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Ex 11.3 question 6 explaination.... ( couldn't understand from the text)

Posted by Richard Parker 3 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Himanshu Kumar Singh 3 years, 10 months ago

okkk

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Inverse TRIGNOMETRIC function

Posted by Ruchika Panghal 3 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Rohan Chaudhary ??? 3 years, 10 months ago

Janna kya chhati Ho aap

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show that the function f(x)=|x|+|x-1|+|x-2| is continuous but not differentiable at x =2

Posted by Zen Ch 3 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Prakhar Chouksey 3 years, 10 months ago

Every modulus function is continuous but non differentiable on its roots

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Intigrals (2x-1)^50

Posted by Manisha K 3 years, 10 months ago

CBSE > Class 12 > Mathematics

3 answers

Abhishek Jha 3 years, 10 months ago

2x^51÷51 - x

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Sashank Dugar 3 years, 10 months ago

answer is wrong

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Jay Satrola 3 years, 10 months ago

(2x-1)^51/101

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y is equal to (3-u divide by 2+u) u is equal to (4x divide by 1-x^2) find dy by dx

Posted by Simran Arora 3 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Shivansh Kaushik 3 years, 10 months ago

Use chain rule here as: dy/dx=(dy/du)×(du/dx)-----[A] •Differentiate 1st function w.r to u by quotient rule. •Differentiate 2nd function w.r to x also by quotient rule. •Put the values in equation A. •If your answer is in terms of u then put the value of u(in terms of x) at last.

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- if the system of linear equations →x + ky +3z=0,3x+ ky -2z=0, 2x + ky -3z = 0 has a non-zero solution (x,y,z) then xz/y² is equal to ????the question from jee 2018 of defferetail equation .

Posted by Shraddha ✨✰✰ 3 years, 10 months ago

CBSE > Class 12 > Mathematics

1 answers

Shivansh Kaushik 3 years, 10 months ago

x+ky+3z=0 ..(1) 3x+ky−2z=0 ..(2) 2x+4y−3z=0 ..(3) For non-zero solutions to exist: Find the value of k by determinant method of linear equations. Solving the above determinant equation, we get −3k+8−k(−9+4)+3(12−2k)=0 ⇒k=11 Solving equations (1), (2) and (3), we get 2x=5z & 3x=−(k+4)y ⇒2x=5z&x=−5y Now, xz/y^2=(x)(2x/5)/[-x/5]^2=10

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Derivative of x _______ a-✓a^2-x^2

Posted by Simran Arora 3 years, 10 months ago

CBSE > Class 12 > Mathematics