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

Consider a triangle ABC with D and E as the midpoints of the sides AB and AC respectively. Now, AD=DB...... (1) AE=EC...... (2) Therefore, AE=1/2 AC...... (3) AD=1/2 AD....... (4) AC - AB = BC (Triangle rule of vector addition).......(5) AE - AD = DE (Triangle rule of vector ardition).......(6) From eq 3 and 4 eq 6 can be written as, 1/2 AC - 1/2 AB = DE AC - AB = 2DE......(7) On comparing eq 5 and 7 BC=2DE

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2x=4

Posted by Shivansh Raj Goswami 5 years, 7 months ago

CBSE > Class 12 > Mathematics

4 answers

Anjali Khati 5 years, 7 months ago

X=2

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Lovely Dhawan 5 years, 7 months ago

X=2

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Khushi Varshney 5 years, 7 months ago

X=2

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Tanvi Agrawal 5 years, 7 months ago

X = 2/4

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Is ex. 13.5 ncert is now in syallabus or not?

Posted by Niyati Dawar 5 years, 7 months ago

CBSE > Class 12 > Mathematics

4 answers

Anjali Khati 5 years, 7 months ago

No 13.5 is not in syallabus

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Geetanjali Rathod 5 years, 7 months ago

And binomial also not in syallabus...

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Geetanjali Rathod 5 years, 7 months ago

But bernoulli traits is not in syllabus.....but check one more time...

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Iamalokm_ /Jac 5 years, 7 months ago

uwu?..... Ofcourse it is in the syallabus

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Easy way of learning calculus?

Posted by Anuj Godiyal 5 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Tamanna Sharma 5 years, 7 months ago

Learn all basic integral and then solve NCERT.same for differential calculus

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Binomial distribution or Bernoulli trials is in syllabus or not?

Posted by Varsha Sharma 5 years, 7 months ago

CBSE > Class 12 > Mathematics

3 answers

Anjali Khati 5 years, 7 months ago

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Meghna Shrivastav? 5 years, 7 months ago

1Thank You

Chirag Gupta 5 years, 7 months ago

1Thank You

ANSWER

If x=a(1+t²/1-t²) and y=2t/(1-t²) find dy/dx

Posted by Kumar Vishal 5 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Nancy Kansal 5 years, 7 months ago

Firstly diffreniate both wrt t and then divide the obtained equations. U will get ur ans

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956/8559/8558+855-852

Posted by Neelam Gautam 5 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Tushar Bhola 5 years, 7 months ago

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Important question

Posted by Abhijeet Bhattacharya 5 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Geetanjali Rathod 5 years, 7 months ago

Application of integrals and derivatives 6 marks questions conform....both chapter means 12 marks

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3dv64

Posted by Poonam Kumari 5 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Find a 2x2 matrix B such that a) B[1. -2] [1. 4] =

Posted by Ishan Gupta 5 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

D/dx of sin

Posted by Naman Singh 5 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Tushar Bhola 5 years, 7 months ago

Abe yaar esse badiya Vikas sir se paad leta. Iska answer cos x hai

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Coordinates of a point

Posted by Balagoud N 5 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Differentiate sin x by first principal

Posted by Rohit Khanchi 5 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Logx/x2 integration

Posted by Prabhat Kumar 5 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Jangra 5 years, 7 months ago

By apllying BY PARTS rule. We get, -1/x{logx+1}+c

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Cbse 2020 compartment paper sallybus

Posted by Elvish Bora 5 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Tushar Bhola 5 years, 7 months ago

Fail hona ka bhaut shauk hai kya

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ANSWER

What is equivalence class

Posted by Minakshi Mittal 5 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Anjali Khati 5 years, 7 months ago

Either they r same or they r distinct

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ANSWER

Sir I fill improvement form. How many marks contained paper.

Posted by Shraddha Yadav 5 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Sin-x (2x√1-x^2)=2cos-x

Posted by Sapna Singh 5 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Important question for 6 marks in literature?

Posted by Ravi Kumar 5 years, 7 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

What is a plane

Posted by Rahul Kothari 5 years, 7 months ago

CBSE > Class 12 > Mathematics

1 answers

Ritish Manhas 5 years, 7 months ago

Aeroplane ✈️✈️?

1Thank You

ANSWER

Integral of sin^2x /(sinx+ cosx)

Posted by Shruti Khatri 5 years, 7 months ago

CBSE > Class 12 > Mathematics

3 answers

Mahesh M 5 years, 7 months ago

Divide num and dem by cos x

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Gaurav Jangra 5 years, 7 months ago

Put, sin^2x=1-cos2x (sinx+cosx) ko dono ke nichey alag alag likhley. Jab 1 ke nichey likhengey toh sinx+cosx ko ek function me convert karle by mutiplying and dividing by root 2. Jab cos2x ke nichey likhengey tab cos2x=cos^2x-sin^2x=(cosx-sinx)(cosx+sinx). Ab toh ho hi jaayega... I hope?

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Gaurav Jangra 5 years, 7 months ago

Heyy!! Its done but how will you get the solution.

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Integration of e power x dx by under root e power 2x + 4 e power x + 4

Posted by Mrityunjay Kumar 5 years, 7 months ago

CBSE > Class 12 > Mathematics