Question

Wyzwacz wartosc parametrow m in , wektor a i b sa rowne

wektor a = [2m+n , m-3n] , b= [ m-1 , 5 - n]
więc pisze:

2m+n=m-1
m+n=1 , co dalej?

Answer 1

2m + n =  m - 1
m - 3n = 5 - n
-------------------
m + n = - 1
m - 2n = 5
----------------- odejmujemy stronami
( m + n) - ( m - 2n) = - 1 - 5
3n = - 6
n = - 2
====
m = - 1 - n = - 1 - ( -2) = - 1 + 2 = 1
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Odp.  m = 1,  n= - 2
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