यदि \(D_1={x:x\in \mathbb{Z},,2<x^2\leq16}\), तो \(D_1\) का सूची रूप क्या होगा?
If \(D_1={x:x\in \mathbb{Z},,2<x^2\leq16}\), what is the roster form of \(D_1\)?
Explanation opens after your attempt
A. \(D_1={-4,-3,-2,2,3,4}\)
Concept
\(x^2\leq16\) gives \(-4\leq x\leq4\).
Why this answer is correct
Since \(2<x^2\), only square values (4,9,16) work, so \(x=\pm2,\pm3,\pm4\).
Exam Tip
Apply both parts of a compound inequality together. चरण 1: \(x^2\leq16\) से \(-4\leq x\leq4\) मिलता है। चरण 2: \(2<x^2\) होने से \(x^2\) के मान (4,9,16) ही चलेंगे, इसलिए \(x=\pm2,\pm3,\pm4\)। चरण 3: संयुक्त असमानता में दोनों भागों को साथ लागू करें।
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