Question

1.What is the value of Dy, for solving simultaneous equations 3x+y=1 and 2x-11y=3 by Cramer's rule. *


2. What is the value of x for solving the simultaneous equations 3x+4y= 8 and x-2y=5 by Cramer's rule. *​

Answer 1

Step-by-step explanation:

Given 1.What is the value of Dy, for solving simultaneous equations 3x+y=1 and 2x-11y=3 by Cramer's rule.

2. What is the value of x for solving the simultaneous equations 3x+4y= 8 and x-2y=5 by Cramer's rule

• We need to solve the given equations using Crammer’s Rule.
• So we have the equations  
•                     3x + y = 1
•                     2x – 11y = 3
• So Determinant D = x     y
•                                   3     1
•                                   2    -11
• We need to find Dy, so changing coefficients of y we get
•                          Dy = 3    1
•                                   2     3
•                    So Dy = 9 – 2
•                               = 7
• Similarly for the second question we have the equations
•                       3x + 4y = 8
•                        x  - 2y =  5
• so Determinant D = x    y
•                                  3     4
•                                  1    -2
• we need to find the Dx, so changing coefficients of x we get
•                         Dx = 8     4
•                                  5    -2
•           So Dx = - 16 – 20
•            Or Dx = - 36

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https://brainly.in/question/22457461

Answer 2

Answer:

Hope it will help you....