3 years ago

Find the zeros of polynomial function and solve polynomials equations. f(x)=81x^4-16

Mathematics

1 answer:

irga5000 [103]3 years ago

3 0

X = 2/3, -2/3

“Solve” : (9x^2+4)•(3x+2)•(3x-2)

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bixtya [17]

Using an exponential function, it is found that f(5.5) = 19.8.

<h3>What is an exponential function?</h3>

An exponential function is a function in which the growth rate is a percentage, modeled by:

$y = ab^x$

In which:

a is the initial value.

b is the rate of change.

f(3.5) = 25 means that:

$ab^{3.5} = 25$

$a = \frac{25}{b^{3.5}}$

f(8.5) = 14 means that:

$ab^{8.5} = 14$

Hence:

$\frac{25}{b^{3.5}} \times b^{8.5} = 14$

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$a = \frac{25}{0.89^{3.5}} = 37.59$

Hence, the function is given by:

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Then, when x = 5.5:

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More can be learned about exponential functions at brainly.com/question/25537936

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