यदि (A(t)=18+2t) और (B(t)=30+5t), तो (B(t)-A(t)) किस प्रकार बदलता है?
If (A(t)=18+2t) and (B(t)=30+5t), how does (B(t)-A(t)) change?
Explanation opens after your attempt
A. हर चरण (3) बढ़ता हैIt increases by (3) each step
Concept
(B(t)-A(t)=12+3t). Its coefficient is (3), so the difference increases.
Why this answer is correct
The correct answer is A. हर चरण (3) बढ़ता है / It increases by (3) each step. (B(t)-A(t)=12+3t). Its coefficient is (3), so the difference increases.
Exam Tip
(B(t)-A(t)=12+3t) है। इसका गुणांक (3) है इसलिए अंतर बढ़ता है।
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