Question

Нужно сделать задания 2,3,4..

Answer 1

2. b6 = b1*q^5 = -1/25*5^ = -1/25*3125 = -125

3. b1 = -20, b2 = -2
q = b2/b1 = (-2)/(-20) = 0,1
bn = b1*q^(n-1)
bn = (-20)*(0,1)^(n-1)

4. b5 = b1*q^4
q^4 = b5/b1 = 567/7 = 81
q = 3, q = -3