00:01
Hello, let's have a look at the question.
00:03
Now, for alice, it is given that m -t is equals to minus 0 .015 t squared plus 0 .2t.
00:15
And for ben, m -dash -t is given to us minus 0 .006t square plus 0 .2t.
00:28
Now in the a part, the coefficient of t square in both the equation is minus 0 .015 and minus 0 .006.
00:46
So, we can say that ben has highest memorization rate.
01:00
Memorization rate.
01:02
Now, in the b part, we have to calculate the number of words for memorizing.
01:12
So this will be integration from 0 to 10 of minus 0 .006t square plus 0 .2t d t.
01:31
So from here, this will be equal to, now, w equals to, minus 0 .006 into t cube by 3 plus 0 .2 into t squared by 2 and the limit is from 0 to 10...