dhyanenatmani pasyanti
kecid atmanam atmana
anye sankhyena yogena
karma-yogena capare

"Some perceive the Supersoul within themselves through meditation, others through the cultivation of knowledge, and still others through working without fruitive desires."

Pasyanti = [they] see. That is they view atman and body as separate entities by analyzing power. Here Three words atmani, atmanam and atmana are mentioned. Each has to be interpreted differently. In atmani, atma means body. Atmani = in the body, atmanam = atman or soul, atmana = by mind. Thus body, jeevatman and mind are to be understood by these three words. Its meaning changes with context. So, soul which is in body has to be viewed separately. How? Dhyanena pasyanti = by meditation, seen. This Dyanam comes after full practcing of Karma yoga and Gyana yoga. This person is superior to those practicing of Karma and Gyana yoga. These people see the atman in body, by mind in meditation. This meditation is not possible for ordinary persons like us. When we sit in meditation, within a few minutes it is disturbed; because our Krama yoga and Gyana yoga have not matured. Continuous practice of Karma yoga and Gyana yoga, would have removed the impuritues of the mind, which, then would be pure. Only a pure mind can involve in Dyanam. We have to continuously perform our prescribed duties. This would enable impurities to be removed from the mind, and yoga slowly matures. That condition would make one to analyze and see atman separately. Atman is still in the body; and, only when it is in the body one could attempt to practice yoga! In this very earth, where we are living we can see atman separately. He sees by his purified mind in meditation. This is the First method explained in the First line of the sloka. Anye = [but] others, those not fully practiced Karma and Gyana yoga, sankyena-yogena = by Gyana yoga [sankya means buddhi and so sankya yoga means yoga attained by intellect, that is Gyana yoga], karma-yogena = in Karmayoga, capare = attain. This is the same expalined in Chapters 2, 3 and 4, where we had dealt with Gyana yoga, which is inherent in Karma yoga. Karma yoga means performing our prescribed duties without any attachment or for any result. It is done by one without the conscience that one is doing. So by Karma yoga and by subsequent Gyana yoga and by a few with Karma yoga and Gyana yoga fully practiced and matured, view the atman in the body, analyzed as separate from body, and realize atman. This is what Sri Krishna tells Arjuna in this sloka.