Question

AJUTOR !!!!
VĂ ROOOOG !!!!​
20,21,23

Answer 1

Răspuns:

Explicație pas cu pas:

20

b1=4    si b2=2   ⇒q=b2/b1-2/4=1/2

bn=b1·q^(n-1)

b10=b1·q^9=4·(1/2)^9=1/2^7=1/128

21

b1=2     b2=4   ⇒q=b2/b1=4/2=2

b6=b1·q^5=2·2^5=2^6=64

23

f(x)=3x-1

(f(-2)=-6-1=-7       f(-1)=-3-1=-4      f(0)=-1       f(1)=2

f(-2)+f(-1)+f(0)+f(1)=-7-4-1+2=-12+2=-10