Question

1.- f(x) = 2x - 1 y g(x) = x + 2.
Determina las funciones:
a) f+g
b)f-g.
c)f.g.
d) flg.

Answer 1

f(x) = 2x - 1 y g(x) = x + 2.

a) f+g

(2x-1) +( x+2) =3x +1

b)f-g.

(2x-1)-( x+2)=x -3

c)f.g

(2x-1) x ( x+2)= 2x^3 +3x^2 -2x

d) flg.

(2x-1) / ( x+2)= 2x-1/x+2