Class 12 Mathematics - Relations and Functions - One-one function Medium Quiz

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वास्तविक संख्याओं पर (aRb) तब है जब \(\lfloor a\rfloor=\lfloor b\rfloor\)। यह संबंध कैसा है?

On real numbers, (aRb) holds when \(\lfloor a\rfloor=\lfloor b\rfloor\). What type of relation is it?

Explanation opens after your attempt
Correct Answer

A. तुल्यता संबंधEquivalence relation

Step 1

Concept

\(\lfloor a\rfloor=\lfloor a\rfloor\), so reflexivity holds.

Step 2

Why this answer is correct

Equality of the greatest integer value is symmetric.

Step 3

Exam Tip

If two values are equal to the same middle value, they are equal to each other, so transitivity holds. चरण 1: \(\lfloor a\rfloor=\lfloor a\rfloor\), इसलिए स्वतुल्यता है। चरण 2: समान पूर्णांक भाग की समानता उल्टे क्रम में भी सही रहती है। चरण 3: यदि दो संख्याओं का पूर्णांक भाग समान मध्य संख्या से समान है, तो वे आपस में भी समान पूर्णांक भाग रखेंगी।

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वास्तविक संख्याओं पर \(\lfloor a\rfloor=\lfloor b\rfloor\) वाले संबंध में (2.7) का तुल्यता वर्ग कौन सा है?

For the relation \(\lfloor a\rfloor=\lfloor b\rfloor\) on real numbers, which is the equivalence class of (2.7)?

Explanation opens after your attempt
Correct Answer

A. ([2,3))

Step 1

Concept

\(\lfloor 2.7\rfloor=2\).

Step 2

Why this answer is correct

Real numbers with greatest integer value (2) lie in ([2,3)).

Step 3

Exam Tip

For floor-based classes, the left endpoint is included and the right endpoint is excluded. चरण 1: \(\lfloor 2.7\rfloor=2\) है। चरण 2: जिन वास्तविक संख्याओं का पूर्णांक भाग (2) है, वे ([2,3)) में आती हैं। चरण 3: पूर्णांक भाग वाले प्रश्नों में बायाँ सिरा शामिल और दायाँ सिरा शामिल नहीं होता।

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समुच्चय \(A=\{(1,1),(1,2),(2,1),(2,2)\}\) पर (aRb) तब है जब दोनों क्रमित युग्मों का प्रथम घटक समान हो। ((1,2)) का तुल्यता वर्ग कौन सा है?

On \(A=\{(1,1),(1,2),(2,1),(2,2)\}\), (aRb) holds when the two ordered pairs have the same first component. Which is the equivalence class of ((1,2))?

Explanation opens after your attempt
Correct Answer

A. ({(1,1),(1,2)})

Step 1

Concept

The first component of ((1,2)) is (1).

Step 2

Why this answer is correct

In the given set, the ordered pairs with first component (1) are ((1,1)) and ((1,2)).

Step 3

Exam Tip

In component-based relations, keep the specified component the same to form the class. चरण 1: ((1,2)) का प्रथम घटक (1) है। चरण 2: दिए गए समुच्चय में प्रथम घटक (1) वाले युग्म ((1,1)) और ((1,2)) हैं। चरण 3: घटक आधारित संबंधों में संबंधित वर्ग बनाने के लिए उसी घटक को समान रखें।

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