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If (A(t)=a+9t) and (A(3)=57), what is (a)?यदि (A(t)=a+9t) और (A(3)=57), तो (a) क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 3030
Given \(A(t)=a+9t\), substitute \(t=3\): \(A(3)=a+9\times3=a+27\). Since \(A(3)=57\), we get \(a+27=57\), so \(a=30\). Option 27 is the amount added over 3 time units, not the initial value \(a\). Exam tip: substitute the specified value of \(t\) first, then solve the resulting equation.दिया है कि \(A(t)=a+9t\)। \(t=3\) रखने पर \(A(3)=a+9\times3=a+27\) होगा। क्योंकि \(A(3)=57\), इसलिए \(a+27=57\), अतः \(a=30\)। विकल्प 27 वृद्धि का मान है, आरंभिक मान \(a\) नहीं। परीक्षा टिप: दिए गए फलन में पहले निर्दिष्ट \(t\) का मान रखकर समीकरण बनाइए।
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