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If (a^2=1521) then what is the positive value of (a)?यदि (a^2=1521) तो धनात्मक (a) क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 3939
Since \(a^2=1521\), we have \(a=\pm\sqrt{1521}=\pm39\), because \(39^2=1521\). The question asks for the positive value, so \(a=39\). Remember that a positive perfect square has two square roots, but its positive square root is the positive one.क्योंकि \(a^2=1521\), इसलिए \(a=\pm\sqrt{1521}=\pm39\)। प्रश्न में धनात्मक मान पूछा गया है, अतः \(a=39\)। ध्यान रखें कि किसी धनात्मक पूर्ण वर्ग के दो वर्गमूल होते हैं, पर धनात्मक वर्गमूल केवल धनात्मक वाला होता है।
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