I was browsing your book and came across this minor error.
section 10.3, p171: You are not dividing by c_n when writing x_n as function of the other x. For brevity, you can define {c'}_i := c_i / c_n. Then you'll have x_n = - {c'}_1 x_1 - {c'}_2 x2 - ... - {c'}{n-1} x_{n-1}.
I was browsing your book and came across this minor error.
section 10.3, p171: You are not dividing by c_n when writing x_n as function of the other x. For brevity, you can define {c'}_i := c_i / c_n. Then you'll have x_n = - {c'}_1 x_1 - {c'}_2 x2 - ... - {c'}{n-1} x_{n-1}.
Cheers!