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1 year ago

-(-(8)))Explain how to answer

Mathematics

1 answer:

GuDViN [60]1 year ago

3 0

$-(-(8))$

1. Remove the parenthesis using the next rules:

$\begin{gathered} -(+)=- \\ -(-)=+ \end{gathered}$

2. Start to remove the parentheses from the center to the edges:

$-(-(8))=-(-8)=+8=8$ <h2>Then, the solution is 8</h2>

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Slope of line one :

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3 years ago

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$\displaystyle \cos\left(\sqrt 5\,x\right) = \sum_{n=0}^\infty (-1)^n \frac{\left(\sqrt5\,x\right)^{2n}}{(2n)!} = \sum_{n=0}^\infty (-5)^n \frac{x^{2n}}{(2n)!}$

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and the general n-th term is as shown in the series.

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which amounts to replacing the x with √x in the expansion of cos(√5 x) :

$\cos\left(\sqrt{5x}\right) \approx 1 - \dfrac{5x}2 + \dfrac{25x^2}{24}$

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2 years ago

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