IF 9 TERM OF AN A.P IS ZERO, PROVE THAT ITS 29 TERM IS DOUBLE (TWICE) THE 19 TERM.
Answers
Answered by
8
Ninth term is zero
a+8d=0
a= -8d
29th term is a+28d=-8d+28d=20d
19th term is a+18d=-8d+18d=10d
hence 29th term =20d = 2(10d) = 2(19th term)
a+8d=0
a= -8d
29th term is a+28d=-8d+28d=20d
19th term is a+18d=-8d+18d=10d
hence 29th term =20d = 2(10d) = 2(19th term)
Similar questions