Which of the following are relations from B to A where A = {a, b, c, d} and B = {x, y, z}? -Maths 9th

Which of the following are relations from B to A where A = {a, b, c, d} and B = {x, y, z}? -Maths 9th
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(c) (i), (ii) and (iv)The set of ordered pairs {(b, y), (z, a), (x, c)} does not state a relation from B to A as the ordered pair (b, y) has the first element ‘b’ from set A, whereas it should be from set B.
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Let A = {a, b, c, d} and B = {x, y, z}. Which of the following are relations from A to B ? -Maths 9th

Description : Let A = {a, b, c, d} and B = {x, y, z}. Which of the following are relations from A to B ? -Maths 9th

Last Answer : (i) Yes. (ii) No, because in the ordered pair (a, d), a ∈ A and d ∉ B. (iii) No, because in (y, d), y ∈ B. (iv) No. because here the first entries in all the ordered pairs are in ... ) No, because the element z is not an ordered pair. (vii) No, because the elements of the set are not ordered pairs.

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Last Answer : (c) S is an equivalence relation but R is not an equivalence relationR = {(x, y) | x, y ∈ R, x = wy, w is a rational number} Reflexive: x R x ⇒ x = wx ⇒ w = 1, (a rational number) Hence R is reflexive. Symmetric ... \(rac{r}{s}\) ⇒ \(rac{m}{n}\) S \(rac{r}{s}\) (True)∴ S is an equivalence relation.

Define the types of relations and their examples. -Maths 9th

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Description : If R is a relation on a finite set A having n elements, then the number of relations on A is -Maths 9th

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Description : If x+y=10 and x=z then show that z+y=10 by using appropriate eculids axioms? -Maths 9th

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Description : If x+y =10 and x=z then show that z+y =10 -Maths 9th

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Last Answer : NEED ANSWER

if xylogxy/x+y, yzlogyz/y+z and zxlogzx/z+x are mutually equal, then show that x^x= y^y=z^z -Maths 9th

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if xylogxy/x+y, yzlogyz/y+z and zxlogzx/z+x are mutually equal, then show that x^x= y^y=z^z -Maths 9th

Description : if xylogxy/x+y, yzlogyz/y+z and zxlogzx/z+x are mutually equal, then show that x^x= y^y=z^z -Maths 9th

Last Answer : This answer was deleted by our moderators...

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In Fig. 8.28, ABCD is a parallelogram. Find the value of x, y and z. -Maths 9th

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Description : If (log x)/(l + m - 2n) = (log y)/(m + n - 2l) = (log z)/(n + l - 2m), then xyz is equal to : -Maths 9th

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Description : If x = logabc, y = logbca, z = logc ab, then -Maths 9th

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Description : If y = (1/(a^(1-loga x))), z = (1/(a^(1-loga y))) and x = a^k, then k = -Maths 9th

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If (log x)/(a^2+ab+b^2) = (log y)/(b^2+bc+c^2) = (log z)/(c^2+ca+a^2), then x^(a-b). y^(b-c). z^(c-a) = -Maths 9th

Description : If (log x)/(a^2+ab+b^2) = (log y)/(b^2+bc+c^2) = (log z)/(c^2+ca+a^2), then x^(a-b). y^(b-c). z^(c-a) = -Maths 9th

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If x = (a-b)/(a+b), y = (b-c)/(b+c), z = (c-a)/(c+a), then what is the value of (1+x)/(1-x). (1+y)/(1-y).(1+z)/(1-z)? -Maths 9th

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