WBJEE 2020 Math Solved Paper

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Question : 73 of 75

Marks: +1, -0

Let y=

x2

(x+1)2(x+2)

. Then

d2y

dx2

is

2[
3
(x+1)2
−
3
(x+1)3
+
4
(x+2)2
]
3[
1
(x+1)3
+
4
(x+1)2
−
5
(x+2)3
]
6
(x+1)2
−
4
(x+1)2
+
3
(x+1)3
7
(x+1)3
−
3
(x+1)2
+
2
(x+1)3

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