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Function real to real defined by f(x ) =1+x2

Posted by Khushboo Yadav 6 years, 6 months ago

CBSE > Class 12 > Mathematics

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R={(a,a)} Check weather relation R is reflexive , symmetric or transitive.

Posted by Priya Shyam 6 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Khushboo Yadav 6 years, 6 months ago

The given relation is reflexive since f(x 1 ) =f(x2) which means x1=x2 But it is neither symmetric nor transitive because there does not exist any element other than a in the relation

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Sir my quesion is A=[i 0 0i] find A19

Posted by Trashar Varshney 6 years, 6 months ago

CBSE > Class 12 > Mathematics

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Sir i wanna ask is it a fact that if one year cbse had made exam tough, then next year it will make exam easy??

Posted by Sidhu Saab 6 years, 6 months ago

CBSE > Class 12 > Mathematics

2 answers

Rajat Vashisth 6 years, 6 months ago

Not necessarily

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Riya Pandey 6 years, 6 months ago

Nothing fact do hardwork to get good marks

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Agar Mai class 12 Mai math ka improvement exam deta hu 2020 Mai to Mera Kya 80 marks ka paper hoga To fir mere 20 marks kaha jayege 20 Mark's Kay liye mujhe dubra school Jana hoga Please answer

Posted by Anish Singh 6 years, 6 months ago

CBSE > Class 12 > Mathematics

3 answers

Rajat Vashisth 6 years, 6 months ago

The exam will be of 100 mrks 4 u.

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Akash Choudhary Dav Gandhinagar 6 years, 6 months ago

Nhi tumhara 100 marks ka hi hoga kuyki improvement walo ka alAg se auestion banta h

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Sandeep Kumar 6 years, 6 months ago

Tumhara 20 marks school wale denge like periodic test behaviour copy etc

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How will a failure of class 12 will give practical exam of maths as prescribed in new syllabus in 2020 if he decides to give exam as a private candidate.

Posted by Ambika Singh 6 years, 6 months ago

CBSE > Class 12 > Mathematics

1 answers

Rajat Vashisth 6 years, 6 months ago

He is supposed to give 100 marks paper as per the paper pattern of 2019

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If sin y = x sin(a+y) prove that dy/dx= sin^2(a+y)/sin a......will i get full marks in cbse if i do this by finding dx/dy and then finding the reciprocal of.it to get dy/dx

Posted by Riya Chandra 6 years, 6 months ago

CBSE > Class 12 > Mathematics

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if z1 lies on |z-1|=1 then find re{(z1 -2)/z1}

Posted by Mohammad Owais 6 years, 6 months ago

CBSE > Class 12 > Mathematics

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Ln [x^2+x+1] Find the domain

Posted by Pushti Narula 6 years, 6 months ago

CBSE > Class 12 > Mathematics

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√Log base 2 (x-2) / √log base 1/2 (3x-1) Find the domain

Posted by Pushti Narula 6 years, 6 months ago

CBSE > Class 12 > Mathematics

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Two examples of empty relation

Posted by Akanksha Shrivastava 6 years, 6 months ago

CBSE > Class 12 > Mathematics

2 answers

Gaurav Seth 6 years, 6 months ago

If Relation has no elements,

it is called empty relation

We write R = ∅

Let A = Set of all students in a girls school.

We define relation R on set A as

R = {(a, b): a and b are brothers}

It is a girls school, so there are no boys in the school.

Hence, there cannot be a brother.

∴ R has no elements

⇒ R = ∅ i.e. R is an empty relation

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Sonam Malik 6 years, 6 months ago

a number greater than five but less than 7

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is binary operations of class 12th has been removed...

Posted by Yashveer Singh 6 years, 6 months ago

CBSE > Class 12 > Mathematics

2 answers

Mrutyunjay Khatua 6 years, 6 months ago

Yes

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Kumar Vishal Behera 6 years, 6 months ago

Yes removed

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0 is even or odd ?

Posted by Voldemort Tom Riddle 6 years, 6 months ago

CBSE > Class 12 > Mathematics

4 answers

Mrutyunjay Khatua 6 years, 6 months ago

Even

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Kumar Vishal Behera 6 years, 6 months ago

Even

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Ayush Verma 6 years, 6 months ago

Neither even nor odd

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Satender Kumar 6 years, 6 months ago

even

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Show that f(x)= lx-3l is continuous but not differentiable at x=3.

Posted by Sundram Yadav 6 years, 6 months ago

CBSE > Class 12 > Mathematics

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Do u know what we will have to do for maths practical????? And are 10 marks in maths are taken from periodic tests of school???

Posted by Kumar Vishal Behera 6 years, 6 months ago

CBSE > Class 12 > Mathematics

2 answers

Mrutyunjay Khatua 6 years, 6 months ago

10 marks will be taken from best two periodic test....and another 10 marks is distributed as 5 marks for activity record, 3 mark for the activity test and 2 marks for Viva based on the activity.The activity test will be conducted before the board xm.

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Ayush Verma 6 years, 6 months ago

lab manual prepare karna hai

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When did you give sample paper of 2020p

Posted by Gaurav Chaurasia 6 years, 6 months ago

CBSE > Class 12 > Mathematics