Let f(x_1,x_2,x_3) =ax_1^2 +ax_2^2+ (a-1) x_3^2+2x_1 x_3-2x_2 x_3.

匿名用户最后更新于 2021-09-13 02:31 数学类Mathematics

Let f(x1, x2, x3) =ax? +ax2+(a-1)x3+2x1x3-2x2x3. (1)Find all eigenvalues of the matrix of quadratic form f; ()The criterion of quadratic f is yi+ and the value of a is obtained.

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Let f(x_1,x_2,x_3) =ax_1^2 +ax_2^2+ (a-1) x_3^2+2x_1 x_3-2x_2 x_3.

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