If the function FX is even, the function GX is odd, and FX + Gx = 2x, then FX = GX=

If the function FX is even, the function GX is odd, and FX + Gx = 2x, then FX = GX=

f(x)=f(-x) g(-x)=-g(x)
f(x)+g(x)=2x (1)
(1) Take - x from X
f(-x)+g(-x)=-2x
f(x)-g(x)=-2x (2)
(1) (2) joint solution of equations
f(x)=0
g(x)=2x