jazmynh jazmynh
  • 17-04-2020
  • Mathematics
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Arithmetic series HELP PLEASE

Arithmetic series HELP PLEASE class=

Respuesta :

surjithayer10 surjithayer10
  • 17-04-2020

Answer:

5050

Step-by-step explanation:

∑_{n=1 to 50} (4n-1)

a1=4×1-1=3

a2=4×2-1=7

a3=4×3-1=11

......................

......................

......................

a50=4×50-1=199

n=50

Sn=n/2(a1+an)

S50=50/2(3+199)=50/2×202=50×101=5050

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rawal144mr
rawal144mr rawal144mr
  • 17-04-2020
Put the value of n from 1 to 50 in 4n-1
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