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Lena [83]
3 years ago
6

Evaluate the function f(x) at the given numbers (correct to six decimal places).

Mathematics
1 answer:
Marysya12 [62]3 years ago
7 0

Answer:

f(2.1) = 0.512195

f(2.05) = 0.506173

f(2.01)=0.501247

f(2.001) = 0.500125

f(2.0001) = 0.500012

f(1.9) = 0.487179

f(1.95) = 0.493671

f(1.99) = 0.498747

f(1.999) = 0.499875

f(1.9999) = 0.499987

Step-by-step explanation:

Given

f(x) = \frac{x^2 - 2x}{x^2 - 4}

Solve for f(x) for all given values of x

First, we need to simplify f(x)

f(x) = \frac{x^2 - 2x}{x^2 - 4}

f(x) = \frac{x(x - 2)}{x^2 - 2^2}

f(x) = \frac{x(x - 2)}{(x- 2)(x + 2)}

f(x) = \frac{x}{x + 2}

When x = 2.1

f(x) = \frac{x}{x + 2}

f(2.1) = \frac{2.1}{2.1 + 2}

f(2.1) = \frac{2.1}{4.1}

f(2.1) = 0.512195

When x = 2.05

f(x) = \frac{x}{x + 2}

f(2.05) = \frac{2.05}{2 + 2.05}

f(2.05) = \frac{2.05}{4.05}

f(2.05) = 0.506173

When x = 2.01

f(x) = \frac{x}{x + 2}

f(2.01)=\frac{2.01}{2.01 +2}

f(2.01)=\frac{2.01}{4.01}

f(2.01)=0.501247

When x = 2.001

f(x) = \frac{x}{x + 2}

f(2.001) = \frac{2.001}{2.001 +2}

f(2.001) = \frac{2.001}{4.001}

f(2.001) = 0.500125

When x = 2.0001

f(x) = \frac{x}{x + 2}

f(2.0001) = \frac{2.0001}{2.0001 + 2}

f(2.0001) = \frac{2.0001}{4.0001}

f(2.0001) = 0.500012

When x = 1.9

f(x) = \frac{x}{x + 2}

f(1.9) = \frac{1.9}{1.9 + 2}

f(1.9) = \frac{1.9}{3.9}

f(1.9) = 0.487179

When x = 1.95

f(x) = \frac{x}{x + 2}

f(1.95) = \frac{1.95}{1.95 + 2}

f(1.95) = \frac{1.95}{3.95}

f(1.95) = 0.493671

When x = 1.99

f(x) = \frac{x}{x + 2}

f(1.99) = \frac{1.99}{1.99 + 2}

f(1.99) = \frac{1.99}{3.99}

f(1.99) = 0.498747

f(x) = \frac{x}{x + 2}

When x = 1.999

f(x) = \frac{x}{x + 2}

f(1.999) = \frac{1.999}{1.999 + 2}

f(1.999) = \frac{1.999}{3.999}

f(1.999) = 0.499875

When x = 1.9999

f(x) = \frac{x}{x + 2}

f(1.9999) = \frac{1.9999}{1.9999 + 2}

f(1.9999) = \frac{1.9999}{3.9999}

f(1.9999) = 0.499987

<em>Note that all values of f(x) are approximated to 6 decimal places</em>

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In the diagram below, we have $ST = 2TR$ and $PQ = SR = 20$. Find the length $UV$.
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Answer:

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Step-by-step explanation:

1. ST=2TR and SR=20, then by segment addition postulate

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2. Consider triangles PQU and TSU. These triangles are similar by AA similarity theorem (triangles have congruent vertical angles PUQ and TUS and congruent alternate interior angles PQU and TSU). Similar triangles have proportional corresponding sides, so

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