Question

Cine ma ajuta si pe mine la mate?Progresii aritmetice clasa a 9 a.Ex 6,7 si 13(a,b,c)

Answer 1

6.

a) a1=-2 , a2=1, a3=4 ,a4= 7, a5=10

7.

a) 0, 3, 6, 9, 12...

b)-1,-4,-7,-11,-15...

13.

a) 1,4,7,10,13.. a1= 1, r=3

b) -7,5,17,29,41 a1 =-7 r=41

c) nu-l inteleg