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let A be the set of all students of class XII in a school and R be the relation, having the same *** on A, and then prove that R is an equivalence relation. Do you think, co-education may be helpful in child development and why?
cbse
class12
valuebasedproblems2012
additionalproblem
ch1
q4
math
sec-b
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asked
Jan 24, 2013
by
shanthinig
retagged
Jan 24, 2013
by
pady_1
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Prove that $f: \text{R} \rightarrow \text{R}$ is a bijection given by $f(x) = x^3 + 3$. Find $f^{-1}(x)$. Does the truthfulness and honesty may have any relation?
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Jan 24, 2013
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pady_1
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In a co educational school, the students of higher classes are often confused and uncomfortable with the development changes that their bodies undergo. Seeing this, the Biology teacher decided to conduct a seminar on the *** education. Other teachers objected this saying it is totally unnecessary. a)What value system does the teacher show?b) What kind of change do adolescent children undergo?c.)Is *** education advisable in schools?
asked
Dec 28, 2016
by
meena.p
biologycbse
class12
biology
zoology
sec-d
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0
votes
0
answers
Let N denote the set of all natural numbers and R be the relation on N x N defined by $ (a,b)R(c,d) \Leftrightarrow ad(b + c) = bc(a + d).$ Show that R is an equivalence relation on N x N.
asked
Jan 23, 2013
by
meena.p
cbse
class12
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kvquestionbank2012
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Principal and staff of a school decided to award prizes to their students for three values Honesty (x) cleanliness (y), Punctuality (z) in two groups. Group A ( upto class VIII) and group B ( IX - XII). It is decided that Rs. 12000 for three values (x, y, z) for 3, 4, 5 students of Group A and Rs. 11040 for 5, 4, 3 student of group B respectively. If all the three prizes together amount to Rs. 2880, then (i) Represent above situation by a matrix equation and form linear equation using matrices. (ii) Is it possible to solve the system of linear equations so obtained using matrices? (iii) Which value you prefer to be rewarded most and why?
asked
Jan 21, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
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sec-b
q13
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0
votes
0
answers
Show that the relation "Â“congruence modulo 2"Â” on the set Z (set of integers) is an equivalence relation. Also find the equivalence class of 1.
asked
Jan 23, 2013
by
meena.p
cbse
class12
additionalproblem
kvquestionbank2012
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q17
p3
math
sec-b
0
votes
0
answers
Let $f : A \rightarrow B$ be a given function. A relation R in the set A is given by $R = {(a,b) \varepsilon A \times A : f(a) = f(b)}.$ Check, if R is an equivalence relation.
asked
Jan 23, 2013
by
meena.p
cbse
class12
additionalproblem
kvquestionbank2012
ch1
q23
p4
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sec-b
0
votes
1
answer
Let A={1,2,3....9} and R be the relation in AxA defined by (a,b)R(c,d) if a+d=b+c for (a,b),(c,d) in AxA.Prove that R is an equivalence relation and also obtain the equivalent class[(2,5)].
asked
Dec 19, 2012
by
sreemathi.v
cbse
class12
ch1
q23
p13
exemplar
sec-b
math
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