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.
1 Linear vs. nonlinear: If all the operators in a mathematical model exhibit linearity, the resulting mathematical model is defined as linear. 2  A model is considered to be nonlinear otherwise. 3  The definition of linearity and nonlinearity is dependent on context, and linear models may have nonlinear expressions in them.athematical modeling problems are often classified into black box or white box models, according to how much a priori information on the system is available. A black-box model is a system of which there is no a priori information available.