wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

the second term of an A.P is (x-y) and the fifth term is (x+y) find the first term of the AP

Open in App
Solution

Let a be the first term and d be the common difference.Now, a2 = x - ya + d = x - y .....1Now, a5 = x + ya + 4d = x + y .....2Subtracting 1 from 2, we get4d - d = x+y - x-y3d = x+y-x+y3d = 2yd = 2y3Now, from 1, we geta + 2y3 = x - ya = x - y - 2y3a = 3x - 3y - 2y3a = 3x - 5y3So, first term, a = 3x - 5y3

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Harmonic Progression
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon