Question

THE 4TH TERM OF A G.P IS SQUARE OF ITS SECOND TERM AND FIRST TERM IS -3. DETERMINE G.P

Answer 1

Answer:

-3, 9, -27, 81

Step-by-step explanation:

given is 1st term is -3

and second term (A2) and forth term (A4) are related as

(A2)^2 = (A4)...............................................(i)

according to g.p.

(A)n= A1^n

therefore

A4= A1^4.......................................................(ii)

on solving (i) and (ii)

we get

A2= 9

A3= -27

A4= 81