Question

Calculați (f compus cu g)(0) unde f:R->R,f(X)=2x-1 si g:R->R, g(X)=x^2+x+1

Answer 1

 g(0)=0+0+1=1
f(1) =2*1-1=1



altfel:
f(g(x))=2(x²+x+1)-1=2x²+2x+2-1=2x²+2x+1
f(g(0))=1