When is a relation (R\subseteq A\times B) called a function from (A) to (B)?एक relation (R\subseteq A\times B) कब (A) से (B) में फलन कहलाता है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: For every (a\in A), there is exactly one (b\in B) such that ((a,b)\in R)हर (a\in A) के लिए ठीक एक (b\in B) हो ताकि ((a,b)\in R)
The condition for a function is on domain elements, not codomain elements. In definition questions, the words exactly one are most important.फलन की शर्त domain elements पर लगती है, codomain elements पर नहीं। definition questions में exactly one शब्द सबसे जरूरी है।
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