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shepuryov [24]
3 years ago
6

Using the recursive formula of a geometric sequence, find the first five sequences: An=An-1 • 2

Mathematics
1 answer:
Lelechka [254]3 years ago
6 0
How: substitute the known value of An-1 to compute An. Repeat.

In order to do this, you need to know A0 or A1, which you have not given.

In terms of A1, the first 5 terms are
.. A1 = (needs to be given)
.. A2 = 2*A1
.. A3 = 2*A2 = 2*2*A1 = 4*A1
.. A4 = 2*A3 = 2*4*A1 = 8*A1
.. A5 = 2*A4 = 2*8*A1 = 16*A1

If you know A1, you can find the other 4 terms of the first 5 terms. If you don't know A1, this is the answer.
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Step-by-step explanation:

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Limit as x approaches 9 of x^2 -81/sqrt of x - 3
Ipatiy [6.2K]

Answer:

108

Step-by-step explanation:

Limit as x approaches 9 of x^2 -81/sqrt of x - 3

First substitute x into the expression

= 9²-81/√9 - 3

= 81-81/3-3

= 0/0 (indeterminate)

Apply l'hospital rule

= lim x -> 9 d/dx(x²-81)/√x - 3

= lim x -> 9 2x/1/2√x

Substitute x = 9

= 2(9)/1/2√9

=18/1/(2(3)

=18 × 6/1

= 108

Hence the limit of the function is 108

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3 years ago
Find the area of the rhombus 6cm, 8cm
Igoryamba

Answer:

A=24cm²

Step-by-step explanation:

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A=1/2(6×8)

A=1/2(48)

divide by 2

A=24cm²

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