" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
g(x)= f(x+1)-f(x)+8 = (x+1)³-(x³-3x²+5)+8=x³+3x²+3x+1-x³+3x²-5+8=3x²+3x+4
g(x)=0
3x²+3x+4=0
Δ<0
dla każdego x∈R funkcja g(x)>0