A) \[f(a)=g(c)\]
B) \[f(b)=g(b)\]
C) \[f(d)=g(b)\]
D) \[f(c)=g(a)\]
Correct Answer: C
Solution :
We have \[f(x)=ax+b,\,g(x)=cx+d\] and \[f(g(x))=g(f(x))\] Þ \[f(cx+d)=g(ax+b)\] Þ \[a[cx+d]+b=c[ax+b]+d\] Þ \[ad+b=cb+d\]Þ \[f(d)=g(b)\].You need to login to perform this action.
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