True or False In Exercises 85 and 86, determine
Chapter 2, Problem 86(choose chapter or problem)
In Exercises 85 and 86, determinewhether each statement is true or false. If a statementis true, give a reason or cite an appropriate statementfrom the text. If a statement is false, provide an examplethat shows the statement is not true in all cases or cite anappropriate statement from the text.(a) If A is an m × n matrix and B is an n × r matrix,then the product AB is an m × r matrix.
(b) The matrix equation Ax = b, where A is the
coefficient matrix and x and b are column matrices,
can be used to represent a system of linear equations.
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