Sunday, 28 April 2019

Telescoping trigonometric series

How would you evaluate the sum of this series



Sinx*sec3x + sin3x*sec3^2(x) + sin3^2(x)*sec3^3(x) + ... upto n terms.



I can tell it is a telescoping series but I am not able to get that one step that will cancel all terms

No comments:

Post a Comment