I have no idea how to do this problem in Matlab, and there is no example in my b
ID: 1765525 • Letter: I
Question
I have no idea how to do this problem in Matlab, and there is no example in my book to do this, please help.
Q#2: In Germany, annual professional fees are set by law for engineers, doctors and lawyers. In Frankfurt, ors, 18 lawyers and 12 engineers were $76.5M. In Munich, 18 doctors, 9 lawyers, and 20 engineers were charged $55.0M and in Berlin 25 doctors, 20 lawyers, and 16 engineers were charged $85.5M. Using Matlab command to determine the annual fees charged by each doctor, lawyers and engineers.Explanation / Answer
This is basically a problem of solving a system of linear equatiins with three unknows
Let the fee for doctor be x,lawyer be y and engineer be z
In Frankfurt, 23x+18y+12z=76.5(million dollars)
In Munich, 18x+9y+20z=55(milliom dollars)
In Berlin, 25x+20y+16z=85.5(million dollars)
Therefore, the system.of equations is
23x+18y+12z=76.5
18x+9y+20z=55
25x+20y+16z=85.5
The above three equations can be solved by defining two matrices A and B,wherein matrix A is 3x3 and has all the coefficients of the system of equations and matrix B is 3x1 containing the numbers to the right hand side of equations.
The required numbers x,y and z can be calculated by multiplying the inverse of matrix A with matrix B
Inverse(A)*B
This can be easily done in MATLAB. I hope this helps
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