- #1
terryfields
- 44
- 0
how do we get from this line
||d(x,y,z)/d(p,q,r)||= ||sin(q)cos(r), pcos(q)cos(r), -psin(q)sin(r) end of line 1
line 2 sin(q)sin(r), pcos(q)sin(r), psin(q)cos(r) end of line 2
line 3 cos(q), -psin(q), 0||
to the next line where we take out cos(q) to get cos(q)||pcos(q)cos(r), -sin(q)sin(r) end of line 1
line 2 pcos(q)sin(r), psin(q)cos(r)||
i thought to take out a factor like taht you needed a line or a row of zeros where as here we don't have that?
Edit:read it wrong it has -(-psin(q)) of a different matrix after this so I'm guessing all they have done is swaped row 1 and 3 to make things easier, are there any restrictions to row swaping? and I'm guessing you can't column swap at all
||d(x,y,z)/d(p,q,r)||= ||sin(q)cos(r), pcos(q)cos(r), -psin(q)sin(r) end of line 1
line 2 sin(q)sin(r), pcos(q)sin(r), psin(q)cos(r) end of line 2
line 3 cos(q), -psin(q), 0||
to the next line where we take out cos(q) to get cos(q)||pcos(q)cos(r), -sin(q)sin(r) end of line 1
line 2 pcos(q)sin(r), psin(q)cos(r)||
i thought to take out a factor like taht you needed a line or a row of zeros where as here we don't have that?
Edit:read it wrong it has -(-psin(q)) of a different matrix after this so I'm guessing all they have done is swaped row 1 and 3 to make things easier, are there any restrictions to row swaping? and I'm guessing you can't column swap at all
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