Question

Resolva os exercícios

Answer 1

questão número 5

3a + 2c = 1 .(-2) 3b + 2d = 0 .(-2)

2a + 5c = 0 .(3) 2b + 5d = 1 .(3)

--------------- -----------------

-6a - 4c = -2 -6b - 4d = 0

6a + 15c = 0 6b + 15d = 3

------------------ -------------------

11c = - 2 11d = 3

c = -2/11 d = 3/11

2a + 5c = 0 2b + 5d = 1

2a + 5.(-2/11) = 0 2b + 5.(3/11) = 1

2a - 10/11 = 0 2b + 15/11 = 1

22a - 10 = 0 22b + 15 = 11

------------------ ---------------------

11 11

22a = 10 22b = 11 - 15

a = 10/22 22b = - 4

a = 5/11 b = -4/22

b = -2/11