determine values of y if the matrix has no inverse
{2y2 2}
{1 0}
A matrix has no inverse if and only if its determinant is 0.
The matrix (2y2210)\begin{pmatrix} 2y^2 & 2 \\ 1 & 0 \end{pmatrix}(2y2120) has inverse for y∈R.y\in \R.y∈R.
Therefore there are no values of yyy for which the matrix (2y2210)\begin{pmatrix} 2y^2 & 2 \\ 1 & 0 \end{pmatrix}(2y2120) has no inverse.
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