A. क्योंकि (f(3)=4) और \(4\notin{1,2,3}\)/Because (f(3)=4) and \(4\notin{1,2,3}\)
Step 1
Concept
The image of (3) is (4), which is not in the codomain. In exams, check whether every output lies in the codomain.
Step 2
Why this answer is correct
The correct answer is A. क्योंकि (f(3)=4) और \(4\notin{1,2,3}\) / Because (f(3)=4) and \(4\notin{1,2,3}\). The image of (3) is (4), which is not in the codomain. In exams, check whether every output lies in the codomain.
Step 3
Exam Tip
(3) की छवि (4) आती है जो सहप्रांत में नहीं है। परीक्षा में हर आउटपुट सहप्रांत में है या नहीं जांचें।
A. क्योंकि (f(1)=-1) है और \(-1\notin{0,1,2}\)/Because (f(1)=-1) and \(-1\notin{0,1,2}\)
Step 1
Concept
(f(1)=-1) is not in codomain (B), so it is not a function from (A) to (B). In exams, every output must lie in the codomain.
Step 2
Why this answer is correct
The correct answer is A. क्योंकि (f(1)=-1) है और \(-1\notin{0,1,2}\) / Because (f(1)=-1) and \(-1\notin{0,1,2}\). (f(1)=-1) is not in codomain (B), so it is not a function from (A) to (B). In exams, every output must lie in the codomain.
Step 3
Exam Tip
(f(1)=-1) सहप्रांत (B) में नहीं है, इसलिए यह (A) से (B) में फलन नहीं होगा। परीक्षा में आउटपुट सहप्रांत में होना चाहिए।
A. यह (A) से (B) में फलन है/It is a function from (A) to (B)
Step 1
Concept
For every \(x\in A\), \(x^2\in B\) and the image is exactly one. In exams, check whether the rule's images lie in the codomain.
Step 2
Why this answer is correct
The correct answer is A. यह (A) से (B) में फलन है / It is a function from (A) to (B). For every \(x\in A\), \(x^2\in B\) and the image is exactly one. In exams, check whether the rule's images lie in the codomain.
Step 3
Exam Tip
प्रत्येक \(x\in A\) के लिए \(x^2\in B\) और छवि ठीक एक है। परीक्षा में नियम की छवियां सहप्रांत में हैं या नहीं, यह देखें।
