यदि (K(t)=90-4t), तो (K(t)-K(2t)) क्या है?
If (K(t)=90-4t), what is (K(t)-K(2t))?
Explanation opens after your attempt
A. (4t)
Concept
(K(2t)=90-8t). (K(t)-K(2t)=90-4t-(90-8t)=4t).
Why this answer is correct
The correct answer is A. (4t). (K(2t)=90-8t). (K(t)-K(2t)=90-4t-(90-8t)=4t).
Exam Tip
(K(2t)=90-8t) है। (K(t)-K(2t)=90-4t-(90-8t)=4t) है।
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