content_image/309005.jpg content_image/308999.jpg content_image/309000.jpg content_image/309001.jpg content_image/309002.jpg content_image/309004.jpg content_image/309003.jpg
equation) 

where 

k = 0 , 1 , 2 , · · · is a ”new” quantum number, and 

On the other hand, V ( θ ) = 1 / ( 2 cos 2 θ ) would (taking α = β = 0 and γ = 1 in equation (13) of ref.[12) for Dirac equation) result in 

and 

For Schr¨ odinger case, nevertheless, one may just replace the term ( E + M ) by (1 / 2) in the above expressions and get the corresponding eigenvalue results. Then the general solution for both cases would read 

<img src='content_image/309005.jpg'>

where N$_{n}$ r ,k,m is the normalization constant that can be obtained in a straight- forward textbook procedure. Hereby, we witness that the general solution (44) 

<img src='content_image/308999.jpg'>

<img src='content_image/309000.jpg'>

<img src='content_image/309001.jpg'>

<img src='content_image/309002.jpg'>

<img src='content_image/309004.jpg'>

<img src='content_image/309003.jpg'>

