Jawapan

  • Pengguna Brainly
2016-01-10T12:23:52+08:00
S4 = 36
S10 = 370
T1 = ?
d = ?

S4 = 36
36 = a + 3d
a = 36 - 3d

S10 = 370
370 = 36 - 3d + 9d
6d = 370 - 36
6d = 334
d = 167 / 3

a = 36 - 3 ( 167 / 3 )
a = 36 - 167
a = - 164
a = T1
T1 = - 164 
1 5 1
formula bagi Sn adalah = n/2 ( 2a + ( n-1 ) d ) kan?
n-1 iaitu 10-1
darab dgn d dptlah 9d
Oh.. Baru saya dapat tangkap. Ok. Syukron.
sama2