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djverab [1.8K]
3 years ago
13

Determine the root of the equation

Mathematics
1 answer:
larisa [96]3 years ago
6 0

Answer:

0.97087

Step-by-step explanation:

Given the function:

f(x) = e^{2x} - x - 6

Its first derivative is:

f'(x) = 2e^{2x} - 1

Using Newton's method:

x_{n+1} = x_n - \frac{f(x_n)}{f'(x_n)}

and starting with the point:

x_1 = 0.95

we get:

f(x_1) = e^{2(0.95)} - 0.95 - 6 = -0.26410

f'(x_1) = 2e^{2(0.95)} - 1 = 12.37178

x_2 = x_1 - \frac{f(x_1)}{f'(x_1} = 0.95 - \frac{-0.26410}{12.37178} = 0.97134

f(x_2) = e^{2(0.97134)}- 0.97134 - 6 = 0.00608

f'(x_2) = 2e^{2(0.97134)} - 1 = 12.95485

x_3 = 0.97134 - \frac{0.00608}{12.95485} = 0.97087

f(x_3) = e^{2(0.97087)} - 0.97087 - 6 = -2.6240413 \cdot 10^{-7}

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kap26 [50]

Answer:

-2.3, -1 9/10, -1 2/5, 0, 3/4.

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First thing we need to do is express all of the fractions and the decimal in the same unit.

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5 x 2 = 10

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Now, here is what we have.

-14/10, 0, -23/10, 3/4, -19/10.

First, know that negative numbers are ALWAYS SMALLER than zero and ANY positive number.

And, with negative numbers, the number that looks "greater" is actually lesser. For example, -5 is greater than -3 because -3 is closer to 0.

So, let's compare the negative fractions.

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The only number now is -14/10 so that's the next smallest.

0 is obviously less than 3/4 so 0 comes next. And lastly, 3/4 is the only number we have left! so, 3/4 is the greatest!

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-2.3, -1 9/10, -1 2/5, 0, 3/4.

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