1. diketahui fungsi f(x)=2x-3 dan g(x)=x²+2x-3 tentukan!
a. fog (x)
b. gof (x)
a. fog (x)
b. gof (x)
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Penjelasan dengan langkah-langkah:
f(x) = 2x-3
g(x) = x^2 +2x-3
a. fog(x)
= 2 (x^2+2x-3)-3
= 2x^2+4x-6-3
= 2x^2 +4x-9
b. gof(x)
= (2x-3)^2+2(2x-3)-3
= 4x^2-12x+9+4x-6-3
= 4x^2-8x