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What does the interval ((-\infty,-1]\cup[4,\infty)) show on the number line?अंतराल ((-\infty,-1]\cup[4,\infty)) संख्या रेखा पर क्या दिखाता है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (x\le -1) or (x\ge 4)(x\le -1) या (x\ge 4)
((-\infty,-1]) means (x\le -1), and ([4,\infty)) means (x\ge 4). The symbol (\cup) means the union of both parts.((-\infty,-1]) में (x\le -1) और ([4,\infty)) में (x\ge 4) है। (\cup) का अर्थ दोनों भागों का मिलन है।
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