Email
Chat with tutors
logo

Ask Questions, Get Answers

X
 
Questions  >>  EAMCET  >>  Mathematics
Answer
Comment
Share
Q)

$f(x)=(\cos x) (\cos 2x).........( \cos nx) => f'(x)+ \sum \limits _{r=1} ^ n (r \tan rx) f(x)=$

\[\begin {array} {1 1} (1)\;f(x) & \quad (2)\;0 \\ (3)\;-f(x) & \quad (4)\;2f(x) \end {array}\]

1 Answer

Home Ask Tuition Questions
Your payment for is successful.
Continue
...