Răspuns :
f(x)= 4-x
g(x)=2x-5
Gf ΠGg=M(x,y)=>f(x)=y si g(x)=y=>f(x)=g(x)=>4-x=2x-5=> -3x= -5-4 <=> -3x= -9 | :(-3)<=> x= 3
Aflam y:
f(x)=y
4-x=y
4-3=y =>y=1
2x-5=y
6-5=y=>y=1
=>M(3,1 )
g(x)=2x-5
Gf ΠGg=M(x,y)=>f(x)=y si g(x)=y=>f(x)=g(x)=>4-x=2x-5=> -3x= -5-4 <=> -3x= -9 | :(-3)<=> x= 3
Aflam y:
f(x)=y
4-x=y
4-3=y =>y=1
2x-5=y
6-5=y=>y=1
=>M(3,1 )