Which is the correct interval on the number line for (2\le\frac{3x-1}{4}\le 5)?असमानता (2\le\frac{3x-1}{4}\le 5) का संख्या रेखा पर सही interval कौन-सा है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ([3,7])([3,7])
(8\le3x-1\le20) gives (9\le3x\le21), so (3\le x\le7). In exams, a closed compound inequality gives a closed interval.(8\le3x-1\le20) से (9\le3x\le21), इसलिए (3\le x\le7)। परीक्षा में closed compound inequality से closed interval मिलता है।
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