यदि (A(t)=72+8t) और (B(t)=111+15t), तो (B(t)-A(t)) किस प्रकार बदलता है?
If (A(t)=72+8t) and (B(t)=111+15t), how does (B(t)-A(t)) change?
Explanation opens after your attempt
A. हर चरण (7) बढ़ता हैIt increases by (7) each step
Concept
(B(t)-A(t)=39+7t). Its coefficient is (7), so the difference increases.
Why this answer is correct
The correct answer is A. हर चरण (7) बढ़ता है / It increases by (7) each step. (B(t)-A(t)=39+7t). Its coefficient is (7), so the difference increases.
Exam Tip
(B(t)-A(t)=39+7t) है। इसका गुणांक (7) है इसलिए अंतर बढ़ता है।
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