A Neurologist is a physician who treats nervous system disorders, including diseases of the spinal cord, nerves, and the brain. A Neurologist examines nerves in the head and neck, muscle movement, balance, reflexes, memory and speech.
(nonâ³linâ²Ä-Är) Not linear; not obeying a linear relationship. In mathematics, a linear equation may be given in the form y = mx + b, where x is the independent variable, and y is the dependent variable. A nonlinear relationship cannot be represented by such an equation.
The model is also linear in its relationship with (a straight line). However, this second model is curvilinear, since it exhibits a curved relationship when plotted against . The second of these derivatives depends on a parameter . A model is nonlinear if it is not linear in at least one parameter. Only the third model is a nonlinear model. A graph of versus the regressor variable thus does not indicate whether a model is nonlinear. A curvilinear relationship in this graph can be achieved by a model that is linear in the parameters.