Question

Sum to n terms the series : 

      

Solution

Correct option is

 

                                    

Putting r = 1, 2, 3, …., n and adding  

     

          .

SIMILAR QUESTIONS

Q1

Find the angle

      

Q2

Obtain the value of  in terms of cos–1 function.

Q4

The equation   has

Q5
Q8

The value of  is equal to

Q9
Q10

Find the value of