If f(1) = 160 and f(n + 1) = –2f(n), what is f(4)?

Question

26-04-2017
Mathematics

contestada

If f(1) = 160 and f(n + 1) = –2f(n), what is f(4)?

Respuesta :

Otras preguntas

Which of these ordered pairs could you remove to make this relation a function? {(-2,1), (-1, -5), (-1,5), (0, -7), (2, 1)}

Form a polynomial whose zeros and degree are given Zeros: -9 , multiplicity 1; -1 , multiplicity 2; degree 3

What was the document that officially ended the American Revolution in 1783?

Cells in the _______ glands secrete mucus, hydrochloric acid, pepsinogen, and gastrin. gastric esophagus stomach endocrine

which factors determine each biome are

explain how the physical characteristics of an aquatic habitat determine the presence or absence of organisms.

Which is a function of the spinal cord? A. It helps the spine to provide structural support for the body. B. It transmits information between different parts of

The circumference of the circle is 69.08 cm. What is the diameter

What country gave up its claim to the Oregon Territory in the same treaty in which it gave Florida to the United States?

karim10271998 karim10271998 · Answer 1 · 2017-04-26T13:43:20+02:00

karim10271998 karim10271998

26-04-2017

f(4) = f(3+1) = -2f(3) [Using f(n+1) = -2f(n)]

Keep using f(n+1):

-2f(3) = -2f(2+1) = -2[-2f(2)] = 4f(2)

Again:

4f(2) = 4f(1+1) = 4[-2f(1)] = -8f(1) = -8*160

-8*160 = -1280

Answer Link