logo

Ask Questions, Get Answers

 
X
 Search
Want to ask us a question? Click here
Browse Questions
Ad
Home  >>  EAMCET  >>  Mathematics
0 votes

The coefficient of $x^n$ in $\large\frac{1-2x}{e^x}$ is :

\[\begin {array} {1 1} (a)\;\frac{(1+2n)}{n !} & \quad (b)\;(-1)^n. \frac{1+2n}{n!} \\ (c)\;(-1)^n.\frac{(1-2n)}{n!} & \quad (d)\;(-1)^n.\frac{(1+4n)}{n!} \end {array}\]

Can you answer this question?
 
 

1 Answer

0 votes
$ (c)\;(-1)^n.\frac{(1-2n)}{n!}$
answered Nov 7, 2013 by pady_1
 
Ask Question
student study plans
x
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App
...