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If (P(t)=90-3t), what is the value of (P(0)-P(12))?यदि (P(t)=90-3t), तो (P(0)-P(12)) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 3636
Here, P(0)=90-3(0)=90 and P(12)=90-3(12)=54. Therefore, P(0)-P(12)=90-54=36. Option 30 is incorrect because multiplying the decrease rate 3 by 12 gives 36. Exam tip: Substitute both values of t separately in a linear expression, then find their difference.यहाँ P(0)=90-3(0)=90 और P(12)=90-3(12)=54 है। अतः P(0)-P(12)=90-54=36। विकल्प 30 इसलिए गलत है क्योंकि कमी की दर 3 को 12 से गुणा करने पर 36 मिलता है। परीक्षा टिप: रैखिक व्यंजक में t के दोनों मान अलग-अलग रखकर फिर अंतर निकालें।
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