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Value of 20c7

Posted by Ash Varshney 5 years, 1 month ago

1 answers

Sahil Kumar 5 years, 1 month ago

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 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Ronak Mor 5 years, 1 month ago

Yessss

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

Posted by Sadhana K 5 years, 1 month ago

CBSE > Class 12 > Mathematics

5 answers

Sahil Kumar 5 years, 1 month ago

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

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Mukti Sourava Mohapatra 5 years, 1 month ago

No sahil kumar question is correct .

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Mukti Sourava Mohapatra 5 years, 1 month 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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Sahil Kumar 5 years, 1 month 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.

2Thank You

Prakhar Chouksey 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Prakhar Chouksey 5 years, 1 month ago

It's a Bijeective function

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यह शब्द यह नहर में नहीं हैं

Posted by Shivank Garg 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Shivani Chaurasiya 5 years, 1 month ago

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Chap 12.6

Posted by Siya Kumari 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Kashish Agrawal 5 years, 1 month ago

What you want

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What is logorithamic function

Posted by Sadique Ansari 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Mukti Sourava Mohapatra 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Himanshu Kumar Singh 5 years, 1 month ago

okkk

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Inverse TRIGNOMETRIC function

Posted by Ruchika Panghal 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Rohan Chaudhary ??? 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Prakhar Chouksey 5 years, 1 month ago

Every modulus function is continuous but non differentiable on its roots

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Intigrals (2x-1)^50

Posted by Manisha K 5 years, 1 month ago

CBSE > Class 12 > Mathematics

3 answers

Abhishek Jha 5 years, 1 month ago

2x^51÷51 - x

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Sashank Dugar 5 years, 1 month ago

answer is wrong

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Jay Satrola 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Shivansh Kaushik 5 years, 1 month 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 ✨✰✰ 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Shivansh Kaushik 5 years, 1 month 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 5 years, 1 month ago

CBSE > Class 12 > Mathematics

2 answers

Jay Satrola 5 years, 1 month ago

Clarify the statement!!!

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Harshitha Benaka 5 years, 1 month ago

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3,7,13,26,69,127,275?

Posted by Priti Rai 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Student Of The Year 5 years, 1 month ago

I tried as much as possible and find that the upcoming number is that whose sum is 9, I.e. 333, 513, 72, etc...

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How many MCQ are come in Math's paper

Posted by Ayush Tiwari 5 years, 1 month ago

CBSE > Class 12 > Mathematics

5 answers

Krish Phutela 5 years, 1 month ago

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Pratik Kumar 5 years, 1 month ago

8-10

1Thank You

Nalin Ranjan 5 years, 1 month ago

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Kartik . 5 years, 1 month ago

20 or16

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Zeeshan Younis 5 years, 1 month ago

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Give all formulas of integral

Posted by Shivam Yadav 5 years, 1 month ago

CBSE > Class 12 > Mathematics

5 answers

Shivani Chaurasiya 5 years, 1 month ago

1. ∫x n = x n+1 /n+1 + C. 2. ∫cos x = sin x + C. 3. ∫sin x = -cos x + C. 4. ∫sec 2 x = tan x + C. 5. ∫cosec 2 x = -cot x + C. 6. ∫sec x tan x = sec x + C. 7. ∫cosec x cot x = -cosec x + C. 8. ∫dx/√ 1- x 2 = sin -1 x + C.

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Shivani Chaurasiya 5 years, 1 month ago

Are you from Azamgarh?

4Thank You

Shivani Chaurasiya 5 years, 1 month ago

Integral or integration?

4Thank You

Shivam Yadav 5 years, 1 month ago

What happen

2Thank You

Shivani Chaurasiya 5 years, 1 month ago

2Thank You

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What is 0/0 ? Solve with proof....

Posted by Maxout Khushit 5 years, 1 month ago

CBSE > Class 12 > Mathematics

4 answers

Student Of The Year 5 years, 1 month ago

Yes, 0/0=10/0=1 and here is the solution for that. Solution: Given: 0/00/0 Let,,,0/0=a/b0/0=a/b Where a=(0.5)2−(0.5)2a=(0.5)2−(0.5)2 And b=(0.5–0.5)b=(0.5–0.5) So, 0/0=a/b=>0/0=a/b=>[(0.5)2−(0.5)2]/(0.5−0.5)−−>[(0.5)2−(0.5)2]/(0.5−0.5)−−>(11) Solving ‘a’ It is in a2−b2a2−b2 form so it's value is (a+b)(a−b)(a+b)(a−b) a=[(0.5+0.5)(0.5–0.5)]a=[(0.5+0.5)(0.5–0.5)] Replace value of a in equation (1), 0/0=[(0.5+0.5)(0.5–0.5)]/(0.5–0.5)0/0=[(0.5+0.5)(0.5–0.5)]/(0.5–0.5) 0/0=0.5+0.5=>10/0=0.5+0.5=>1 Hence, 0/0=10/0=1. But on a serious note, this isn't true. Please do not take this seriously. Actually, 0/0 is not defined or infinity. And arithmetic operations do not hold true in case of not defined or infinity. For eg. ∞ + ∞ ≠ 2∞ ∞ + ∞ = ∞

1Thank You

Jyoti Kumari 5 years, 1 month ago

Hfbbkh

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Kartar Singh Thukrana 5 years, 1 month ago

It's finite value can be determined by using limits

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Kartar Singh Thukrana 5 years, 1 month ago

Undefined

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Check the following function for one-one and onto ,F:R->R, F(x) 2x-3/7

Posted by Krish Kumar 5 years, 1 month ago

CBSE > Class 12 > Mathematics

0 answers

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Prove that the function f(x)=5x-3 is continuous at

Posted by Amit Ranajn 5 years, 1 month ago

CBSE > Class 12 > Mathematics

0 answers

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tan^2x.sec^2x/1-tan^6x

Posted by Nihal Gupta 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Shubham Hatwal 4 years, 10 months ago

Let tan^3x =t then further solve it

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If x=a(cos 8 + log tan 8/2) & y=a sin8 show that dy/dx = tan 8 8 means theta

Posted by Mahima P Naik 5 years, 1 month ago

CBSE > Class 12 > Mathematics

2 answers

Apoorva Rengasamy 5 years, 1 month ago

dx /d8=a cos^2 8/sin8 dy/d8= a cos8 So, dy / dx = tan 8

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Shivam Yadav 5 years, 1 month ago

Plz write in right way

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Write two different vectors having same magnitude

Posted by Mohit Singh 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

... Mmm ...... 5 years, 1 month ago

Let A vector = i^+j^+k^ and B vector =i^+j^-k^ And |A vector|=under root (1)sq.+(1)sq.+(1)sq. = under root 3 And |B vector|=under root (1)sq +(1)sq +(1)sq.=under root 3 And,so such possible answer are infinite

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2+2+2+2+2

Posted by Neha Chaurasiya 5 years, 1 month ago

CBSE > Class 12 > Mathematics

5 answers

Maxout Khushit 5 years, 1 month ago

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Shivansh Gupta 5 years, 1 month ago

=10

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Suraj Yadav 5 years, 1 month ago

13+40-20-10-10+7-20

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Shreya Rani 5 years, 1 month ago

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Neha Chaurasiya 5 years, 1 month ago

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Cos ^(-x)=π-cos^x for x=[-1,1]

Posted by Tasmiya Firdose 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Shivansh Kaushik 5 years, 1 month ago

Let cosA=x then cos(π−A)=−cosA=−x Hence, cos−1x=A cos−1(−x)=π−A Adding them, cos−1x+cos−1(−x)=A+π−A⇒cos−1x+cos−1(−x)=π⇒cos−1(−x)=π−cos−1(x) This -1 is inverse here. Try to write each step clearly and you will get the answer.

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Y=√tan e√x

Posted by Udyendra Tiwari 5 years, 1 month ago

CBSE > Class 12 > Mathematics

1 answers

Aadharshini Sudha 5 years, 1 month ago

Is this differentiation??

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Show that signum function is not onto

Posted by Vaibhav Gaba 8921, 12Th B 5 years, 1 month ago

CBSE > Class 12 > Mathematics

0 answers

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A firm manufactures two types of products A and B and sells them at a profit of R 5 per unit of type A and R 3 per unit of type B. Each product is processed on two machines M1 and M2. One unit of type A requires one minute of processing time on M1 and two minutes of processing time on M2, whereas one unit of type B requires one minute of processing time on M1 and one minute of processing time on M2. Machines M1 and M2 are respectively available for at most 5 hours and 6 hours in a day. Find out how many units of each type of products should the firm produce a day in order to maximize the profit. Solve the problem graphically.

Posted by It Tp 5 years, 1 month ago

CBSE > Class 12 > Mathematics

2 answers

Shree Ram Faujdar 5 years, 1 month ago

Is this in syllabus?

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Gaurav Seth 5 years, 1 month ago

A firm manufactures two types of products A and B and sells them at a profit of Rs.5 per unit of type A and Rs.3 per unit of type B. Each product is processed on two machines M 1 and M 2 . One unit of type A requires one minutes of processing time on M 1 and two minutes of processing time on M 2 , whereas one unit of type B requires one minutes of processing time on M 1 and one minutes on M 2 . Machines M 1 and M 2 are respectively available for at most 5 hours and 6 hours in a day. Find out how many units of each type of product should the firm produce a day in order to maximize the profit. Solve the problem graphically.

Answer: