ICSE Class 10 Answered
Topic : GP
Q1. Find the GP for which the sum of the first two terms is -4 and the fifth term is 4 times the third term.
Asked by Pankaj | 07 Oct, 2018, 07:03: PM
Expert Answer
First term = a
second term = ar
third term = ar2
fifth term = ar4
a+ar=-4
ar4=4ar2
r2=4
r=+2 or -2
a+a(2)=-4
3a=-4
a=-4/3..........r=+2
a+a(-2)=-4
-a=-4
a=4...........r=-2
Answered by Arun | 08 Oct, 2018, 12:14: PM
Concept Videos
ICSE 10 - Maths
Asked by anuvarshasaravanan18 | 07 Mar, 2023, 06:11: AM
ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by ganeshbala0477 | 26 Jun, 2022, 05:30: PM
ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by suneelmsc | 26 Apr, 2020, 07:15: PM
ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by nithiyanandan | 08 Jul, 2019, 08:49: PM
ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by Pankaj | 07 Oct, 2018, 07:05: PM
ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by Pankaj | 07 Oct, 2018, 07:03: PM
ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by lovemaan5500 | 13 Jan, 2018, 03:07: PM
ANSWERED BY EXPERT