यदि (A=[-4,2)\cup(5,9]) और (B=(-1,6]) हैं, तो \(A\setminus B\) क्या है?
If (A=[-4,2)\cup(5,9]) and (B=(-1,6]), what is \(A\setminus B\)?
Explanation opens after your attempt
A. ([-4,-1]\cup(6,9])
Concept
Since (B=(-1,6]) excludes (-1) and includes (6), removing it from (A) leaves ([-4,-1]\cup(6,9]). In differences, handle open and closed endpoints carefully.
Why this answer is correct
The correct answer is A. ([-4,-1]\cup(6,9]). Since (B=(-1,6]) excludes (-1) and includes (6), removing it from (A) leaves ([-4,-1]\cup(6,9]). In differences, handle open and closed endpoints carefully.
Exam Tip
(B=(-1,6]) में (-1) नहीं है और (6) शामिल है, इसलिए (A) से बीच का भाग हटकर ([-4,-1]\cup(6,9]) बचता है। अंतर में खुले-बंद सिरों पर विशेष ध्यान दें।
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