WBJEE 2014 Maths Solved Paper

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Question : 11 of 80
 
Marks: +1, -0
For every real number x, let f(x) =
x
1!
+
3
2!
x2
+
7
3!
x3
+
15
4!
x4
+ ..... . Then the equation f(x) = 0 kas
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