|
Tutors Answer Your Questions about Matrices-and-determiminant (FREE)
Question 823700: I need help with this math problem. I have to make an augumented matrix to solve it and I have three equations.
1. 3x-y+z=4
2. x+2y+3z=10
3. 3x+2y-z=-12
I have already made the matrix, but I need help on how to get the three numbers that I need.
The answer choices are
A. (0,5,6)
B. (-1,2,9)
C. (-1,-2,5)
D. (0,-2,2)
Click here to see answer by TimothyLamb(4379)   |
Question 823700: I need help with this math problem. I have to make an augumented matrix to solve it and I have three equations.
1. 3x-y+z=4
2. x+2y+3z=10
3. 3x+2y-z=-12
I have already made the matrix, but I need help on how to get the three numbers that I need.
The answer choices are
A. (0,5,6)
B. (-1,2,9)
C. (-1,-2,5)
D. (0,-2,2)
Click here to see answer by math-vortex(648)  |
Question 824806: Solve the problem.
Given that | x y z | = 3, find the value of the determinant | 2 4 5 |
..................| a b c |.............................................................| 3a 3b 3c |
..................| 2 4 5 |.............................................................| x-2 y-4 z-5 |
(dots are just to line problems up)(hope that makes sense)
Click here to see answer by Edwin McCravy(20054)  |
Question 825491: Hi. I am really struggling to answer a certain matrix problem and I am unable to find examples of this type on my own. I attempted to multiple the 4x+3 to each number and setting it equal to the corresponding number, but I kept getting a ton of fractions that did not seem right. Also the 3,3,1, and -2 are one matrix and 10,8,5, and -2 are the other but it won't line up correctly.
4x+3[ 3 2 ] = [ 10 8]
[ 1 -2 ] [ 5 -2 ]
Click here to see answer by jsmallt9(3758) |
Question 828935: The attendance at a rock concert was 6700 people. The tickets for the concer cost $40 for floor seats and $25 for all other seats. The total income of ticket sales was $185,500. write a linear system that models this situation. Solve the system using Cramer's rule, using the substitution method, and using the elimination method. Compare the methods, and explain which one you perfer in this situation. I did the elimination and substitute methods, but I cannot figure out how to set up the Cramer part. Any help would be appreciated
Click here to see answer by rothauserc(4718)  |
Question 829814: Solve the system by finding the reduced form of the augmented matrix (with the identity matrix on the left of the bar, if possible). Then answer a, b, and c below.
x+ 4y+ 3z = 5
3x+ 11y+ 10z = 19
x+ y+ 6z = 17
a) The reduced form of the augmented matrix is:
b) How many solutions are there to this system?
c) If there is a unique solution, give its coordinates in the answer spaces below.
x=
y=
z=
Click here to see answer by TimothyLamb(4379) |
|
Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645
|
| |
