$$\text { Compute the quadratic form } x ^ { T } A x \text { for the given matrix } A \text { and vector } x \text {. }$$
-$$A = \left[ \begin{array} { r r }
2 & 0 \
0 & - 9
\end{array} \right] , x = \left[ \begin{array} { l }
x _ { 1 } \
x _ { 2 }
\end{array} \right]$$
A) $2 x { } _ { 1 } ^ { 2 } - 9 x \frac { 2 } { 2 }$
B) $2 x _ { 1 } - 9 x _ { 2 }$
C) $4 x1 - 18 x 2$
D) $- 9 x \frac { 2 } { 1 } + 2 x \frac { 2 } { 2 }$

Question

$$\text { Compute the quadratic form } x ^ { T } A x \text { for the given matrix } A \text { and vector } x \text {. }$$
-$$A = \left[ \begin{array} { r r } 
2 & 0 \
0 & - 9
\end{array} \right] , x = \left[ \begin{array} { l } 
x _ { 1 } \
x _ { 2 }
\end{array} \right]$$
A) $2 x { } _ { 1 } ^ { 2 } - 9 x \frac { 2 } { 2 }$
B) $2 x _ { 1 } - 9 x _ { 2 }$
C) $4 x1 - 18 x 2$
D) $- 9 x \frac { 2 } { 1 } + 2 x \frac { 2 } { 2 }$

Quizplus · Accepted Answer

The Answer of $$\text { Compute the quadratic form } x ^ { T } A x \text { for the given matrix } A \text { and vector } x \text {. }$$
-$$A = \left[ \begin{array} { r r } 
2 & 0 \
0 & - 9
\end{array} \right] , x = \left[ \begin{array} { l } 
x _ { 1 } \
x _ { 2 }
\end{array} \right]$$
A) $2 x { } _ { 1 } ^ { 2 } - 9 x \frac { 2 } { 2 }$
B) $2 x _ { 1 } - 9 x _ { 2 }$
C) $4 x1 - 18 x 2$
D) $- 9 x \frac { 2 } { 1 } + 2 x \frac { 2 } { 2 }$

Compute the quadratic form xTAx for the given matrix A and vector x. \text { Compute the quadratic form } x ^ { T } A x \text { for the given matrix } A \text { and vector } x \text {. } Compute the quadratic form xTAx for the given matrix A and vector x.

$\text { Compute the quadratic form } x ^ { T } A x \text { for the given matrix } A \text { and vector } x \text {. }$