Respuestas

2013-04-08T20:40:58+02:00

 f(x) = 8x-10

g(x) = x2-4x+20

(se le llaman funcion compuesta)

 

operacion 1:

(f o g ) ( x )

f [ g(x) ]

f [ g(x) ]=  8x-10

f [ g(x) ] = 8 (x2-4x+20) -10

f [ g(x) ] = 8x2 -32x + 160  -10

f [ g(x) ] = 8x2 -32x + 150

 

operacion 2:

( g o f) (x)

g [ f(x) ]

g [ f(x) ] = x2-4x+20

g [ f(x) ] = (8x-10)2 -4(8x-10) +20 ::::::::::::: productos notables

g [ f(x) ] = (16x2 -160x +100) -32x -40 +20

g [ f(x) ] = 16x2 -160x -32x +100 -40 +20

g [ f(x) ] = 16x2 -192x +120