Answer to Question #75616 in Linear Algebra for sibel

Question #75616

Determine all values of the constant a for which the following system has (a) no
solution, (b) an infinite number of solutions, and (c) a unique solution.
ax1 + x2 + x3 = 1,
x1 + ax2 + x3 = 1,
x1 + x2 + ax3 = 1.

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