$$|x|^2$$

Question

$$|x|^2$$

unklerhaukus · Answer

What is the relation ship between the absolute value the modulus and the determinate

saifoo.khan · Answer

$$\Large (\sqrt{x^2})^2$$Something like that..?

anonymous · Answer

Determinant of a Matrix and absolute value?

unklerhaukus · Answer

$$|x|^2=x\bar x$$

unklerhaukus · Answer

yes ishaan are they the same thing?

unklerhaukus · Answer

modulus means measure
 and the determinate is a scalar value indicating how much the two vectors have in common

unklerhaukus · Answer

The symbols are they same

anonymous · Answer

No, I don't think so. But I am no expert.

unklerhaukus · Answer

Well can you think of an example where the similarity breaks down?

unklerhaukus · Answer

can you take the determinate and get a negative value?

anonymous · Answer

$$\left[\begin{matrix}0 &1\1&0\end{matrix}\right]$$
How about this one?

unklerhaukus · Answer

the determinant of that is  0-1=-1, 
hmm interesting, 
so the absolute values is a special cans of the determinate/

unklerhaukus · Answer

cans*case

unklerhaukus · Answer

there is something more going on i just cant see what it is ,

anonymous · Answer

hmm i haven't taken advanced classes, i don't know what a determinant actually is. i only know how to calculate it. :/

@joemath314159 he is the expert.

unklerhaukus · Answer

we|dw:1335327380550:dw|
the area of the parallelogram is the determinate of 
$$\begin{bmatrix} e_1 & e_2 & e_3 \ v_x & v_y & v_z \ w_x & w_y & w_z\end{bmatrix}$$