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How should I solve this question what concept should be applied

How should I solve this question what concept should be applied

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Grade:12th pass

1 Answers

Mahima Kanawat
1010 Points
5 years ago
Dear student 
This is rms, there is a simple trick ,just follow reverse steps i.e., first square, mean and then root.
I = 2 (t)1/2
On squaring it will be 4t
Then take mean, by integration, taking limits from 2 to 4
It will be 12
Then take root, answer will be 2(3)½
WITH REGARDS 
MAHIMA 
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