" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
Zad.3.y=2x² -8x+24 x∈<-1,3>
p= -b/2a⇒ p= 8/4=2
Δ= 64 -4·2·24=64-192= -128
q= -Δ/4a= 128/8=16
W=(2,16) , 2∈<-1,3>
f(-1)= 2·(-1)² - 8·(-1) +24= 2 +8+24=34
f(3)= 2·3² -8·3 +24 =18 -24 +24=18
ymin= f(2)=16
ymax= f(-1)=34