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Simplify:          

What is the policy on make up tests?

Perform the indicated operation:      

Solve for x:         

If the dimension of is 3×5 and the dimension of is 3×5, then dimension of is [b1] x [b2]. If the dimension of is 3×4 and the dimension of is 4×3, then dimension of  is [ba1] x [ba2].

[a] If is reducible to the identity matrix, then is invertible. [c] The inverse of the inverse of an invertible matrix is the matrix itself. [d] If and , then  is singular.

Given the following matrix and vectors:

If the dimension of is 5×3 and the dimension of is 5×7, then dimension of is [b1] x [b2]. If the dimension of is 4×3 and the dimension of is 3×4, then dimension of  is [ba1] x [ba2].

Select ALL correct answers. Choose linear equations among equations listed below.

A subspace of a vector space is a subset of that has three properties: Select all correct answers.