Question

Prosze o zrobienie zadania 2.24 przykładów a b i c i zadania 2.25.

Answer 1

2.24

a)

W(-1) = 1 + 3 + 2 - n + m = 6 - n + m

W(2) = 16 - 24 + 8 + 2n + m = 2n + m

 

2n + m = 0

6 - n + m = 0

 

m = -2n

6 - n - 2n = 0

 

m = -2n

-3n = -6

 

m = -2n

n = 2

 

m = -4

n = 2

 

 b)

W(-1) = 1 + 1 - m + n = 2 - m + n

W(1) = 1 + 1 + m + n = 2 + m + n

 

2 - m + n = 0

2 + m + n = 0

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

4 + 2n = 0

2n = -4

n = -2

 

2 - m - 2 = 0

-m = 0

m = 0

 

m = 0

n = -2

 

c)

W(-1) = -3 + 2 + m + n = - 1 + m + n

W(1) = 3 + 2 - m + n = 5 - m + n

 

-1 + m + n = 0

5 - m + n = 0

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

4 + 2n = 0

2n = -4

n = -2

 

-1 + m - 2 = 0

m = 3

 

m = 3

n = -2