... 10 13 16 18 21 24 26 29 32 34 0 0 2 1 2 2 1 2 2 1 2 2 1 2 0 1 5 8 10 13 16 18 21 24 26 29 32 34 0 3 2 1 2 2 1 2 2 1 2 2 1 2 Các chỉ số jk(y) ... = 22 21 12 222 12 2fx fxxfxx fx⎡⎤∂∂ ∂∂∂⎢⎥⎢⎥∂∂∂ ∂∂⎣⎦ = 20 02 ⎡⎤⎢⎥⎣⎦ ⇒ f(x1, x 2 ) = f( x1, x 2 ) + T111T1 122 1 122 22 2 2xxx 20 1(x x ,x x ) (x x ,x x )xx2x 0 2 2−⎡⎤⎡⎤⎡⎤−−+−−⎢⎥⎢⎥⎢⎥−⎣⎦⎣⎦⎣⎦+ 2 (x ... 1 2 3 4 5 6 7 8 (0;3) (2, 7;1,51) (2, 52; 1 ,2) (2, 43;1 ,25 ) (2, 37;1,16) (2, 33;1,18) (2, 3;1,14) (2, 28;1,15) 52 0,34 0,09 0,04 0, 02 0,01 0,009 0,007 (–44 ;24 ) (0,73;1 ,28 ) (0,80;–0,48)...