birthdaygirl12014 birthdaygirl12014
  • 21-09-2021
  • Mathematics
contestada

If
f
(
1
)
=
10
f(1)=10 and
f
(
n
)
=
−
5
f
(
n
−
1
)
−
n
f(n)=−5f(n−1)−n then find the value of
f
(
5
)
f(5)

Respuesta :

patelreeta47
patelreeta47 patelreeta47
  • 22-09-2021

Answer:

f(1)=10

f(n)=nf(n-1)+5

f(2)=2f(1)+5=2*10+5=25

f(3)=3f(2)+5=3*25+5=75+5=80

f(4)=4f(3)+5=4*80+5=320+5=325

f(5)=5f(4)+5=5*325+5=1625+5=1630

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