2008 Second Semester MATHS课程问答帖(请用英文提问)

摇得你好滚

and if we want to normalize a vecvor u, do we write like this: u/(u*u) ?

摇得你好滚

why did i got 1, -3, 4? i've checked again and again...

册那

how 2 prove that Null(A^T*A)=Null(A)? cheers.

nickychiu

math 108
if we want to find out there is "a unique solution" for the value of m in such as this example
x      y       z
1     0      1    1
0   1+m  1   m-3
0  -m/3   1    1/3

a unique solution is to make all values of 3rd row X Y Z to be "0"
how could i make this happen?

天外飞猪

天哪。半学期过去了。
还在upgrade啊？？
什么时候才可以看见往年的assign呢。。。

nickychiu

居然是你，果然是你。

阿Ting

The question asks us to transform the augmented matrix below into rref
1         0             2            1
2         1             3            m
-2        m           -5           -3
The rref i got is:
1          0            2             1
0          1             -1           m - 2
0           0           m - 1         - m^2 + 2m - 1
im really not good at this rref thing, jst wondering if i did this right. Can u take a look at it for me please? Thank you very much!

bendy1111

09 first semester,maths 208

有人在做assignment 1吗，讨论一下啊

duclover

有米人做MATHS 326 assignment 1呢？？？？？

thear

thear

;32;;32;

小粘糕

hello?help with math108 ass1 plz