“…Therefore, obtaining the optimal drug delivery scenario for a patient not only prevents squandering monetary resources but also restrains the toxicity of healthy tissues and other side effects, and increases the survival chance of the cancer patient. Several optimal control based methods have been proposed for the treatment of cancer patients via chemotherapy by different researchers (Bahrami and Kim, 1975;Swan and Vincent, 1977;Swan, 1990;dePillis andRadunskaya, 2001, 2003;dePillis et al, 2007;Itik et al, 2009;Chen et al, 2012;Batmani and Khaloozadeh, 2013;Rao et al, 2010;Madhavi et al, 2013;Shi et al, 2011).…”