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If (M(t)=m+8t) and (M(2)=44), what will (M(7)) be?यदि (M(t)=m+8t) और (M(2)=44), तो (M(7)) क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 8484
Given \(M(t)=m+8t\). Substituting \(t=2\), \(M(2)=m+16=44\), so \(m=28\). Now, at \(t=7\), \(M(7)=28+8\times7=28+56=84\). Therefore, 84 is the correct answer. The value 76 can result from incorrectly counting the increase. Exam tip: first use the given condition to find the unknown constant \(m\), then substitute the required value of \(t\).दिया है कि \(M(t)=m+8t\)। \(t=2\) रखने पर \(M(2)=m+16=44\), इसलिए \(m=28\)। अब \(t=7\) रखने पर \(M(7)=28+8\times7=28+56=84\)। अतः सही उत्तर 84 है। 76 तब मिलता यदि वृद्धि को गलत तरीके से गिना जाए। परीक्षा टिप: पहले दी हुई शर्त से अज्ञात स्थिरांक \(m\) ज्ञात करें, फिर मांगा गया \(t\) रखें।
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