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funkcja jest rosnąca dla a>0
a)f(x)=(m-1)x+3
m-1>0
m>1
b)f(x)=-3mx-2
-3m>0
3m<0
m<0
c)f(x)=(2m-√3)x-2
2m-√3>0
2m>√3
m>√3/2
d)f(x)=|m+2|x-1
|m+2|>0
m≠-2