Only square matrices can have a determinant. One of the original uses of a determinant of a matrix had to do with solving a system of linear equations. Once the determinant of a matrix had been calculated, that number could be used to help quickly compute the solution to a system of equations.
A physician assistant may perform medical services when under the supervision of a physician. Medical services which may be performed by a physician assistant include a referral to a physical therapist for treatment. In making such a referral, the physician assistant is acting as the agent of the physician.ew York State law restricts the practice of physical therapy to licensed physical therapists or certified physical therapist assistants. Individuals who are not licensed or certified may not provide physical therapy services.
Physical Therapist Assistant (PTA) Careers Overview. Physical therapists and physical therapist assistants (PTAs) under the direction and supervision of a physical therapist are the only providers of physical therapy services.In many practice settings, physical therapists rely on the PTA to assure that all patients/clients have access to physical therapy services.hysical Therapist Assistant (PTA) Careers Overview. Physical therapists and physical therapist assistants (PTAs) under the direction and supervision of a physical therapist are the only providers of physical therapy services.