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About LinkBacksHere is a problem I don't quite know what to do with.
Solve the system of equations.
should I just solve for z by isolating it on one side of the equation like I would normally or is there a better method?
i would prefer the matrix method. X=A^(-1).B where X=(x,y,z),Originally Posted by MathBlaster47
Here is a problem I don't quite know what to do with.
Solve the system of equations.
should I just solve for z by isolating it on one side of the equation like I would normally or is there a better method?
A=(3,4,1)
(2,0,1)
(-5,3,8)
B=(7,3,-31) where A is a 3 by 3 matrix and X and B are 3 by 1 matrices.
Hi MathBlaster47,Here is a problem I don't quite know what to do with.
Solve the system of equations.
should I just solve for z by isolating it on one side of the equation like I would normally or is there a better method?
There are several ways to solve a system like this, but your way seems to be a good start.
(1)
(2)
(3)
Solve (2) for z:
Substitute this for y in (1) and (3).
(1)
(3)
Solve these two equations for x and y by using substitution or elimination method. Then, substitute your value for y into (2) to find z.
(1)
(3)
Multiply (1) by 5. Multiply (2) by 3.
(1)
(3)
Add (1) + (3).
I'll leave the rest for you. Good luck.
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