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Veronika [31]
3 years ago
8

Point W(5, -6) is reflected across the line y = -x. Which of the following is the location of its image, W’.

Mathematics
2 answers:
VashaNatasha [74]3 years ago
8 0
<h3>Answer:</h3>

<em>(6, -5)</em>

<h3><u>Key Concepts for Reflections:</u></h3>
  • if (a, b) is reflected on the <em>x-axis</em>, the image is the point <em>(a, -b)</em>
  • if (a, b) is reflected on the <em>y-axis</em>, the image is the point <em>(-a, b)</em>
  • if (a, b) is reflected on the line<em> y = x</em>, the image is the point <em>(b, a)</em>
  • if (a, b) is reflected on the line <em>y = -x</em>, the image is the point <em>(-b, -a)</em>

<em />

<u><em>(5, -6) --> (-5, 6)</em></u>

<u><em /></u>

<em>Hope this helps!!</em>

<em>I'd right the key concepts for future reference! </em>

<em>:D</em>

<em />

<em />

vampirchik [111]3 years ago
3 0

Answer:

(6,-5)

Step-by-step explanation:

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Find the derivative.
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Answer:

\displaystyle f'(x) = \bigg( \frac{1}{2\sqrt{x}} - \sqrt{x} \bigg)e^\big{-x}

General Formulas and Concepts:

<u>Algebra I</u>

Terms/Coefficients

  • Expanding/Factoring

<u>Calculus</u>

Differentiation

  • Derivatives
  • Derivative Notation

Basic Power Rule:

  1. f(x) = cxⁿ
  2. f’(x) = c·nxⁿ⁻¹

Derivative Rule [Quotient Rule]:                                                                           \displaystyle \frac{d}{dx} [\frac{f(x)}{g(x)} ]=\frac{g(x)f'(x)-g'(x)f(x)}{g^2(x)}

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

\displaystyle f(x) = \frac{\sqrt{x}}{e^x}

<u>Step 2: Differentiate</u>

  1. Derivative Rule [Quotient Rule]:                                                                   \displaystyle f'(x) = \frac{(\sqrt{x})'e^x - \sqrt{x}(e^x)'}{(e^x)^2}
  2. Basic Power Rule:                                                                                         \displaystyle f'(x) = \frac{\frac{e^x}{2\sqrt{x}} - \sqrt{x}(e^x)'}{(e^x)^2}
  3. Exponential Differentiation:                                                                         \displaystyle f'(x) = \frac{\frac{e^x}{2\sqrt{x}} - \sqrt{x}e^x}{(e^x)^2}
  4. Simplify:                                                                                                         \displaystyle f'(x) = \frac{\frac{e^x}{2\sqrt{x}} - \sqrt{x}e^x}{e^{2x}}
  5. Rewrite:                                                                                                         \displaystyle f'(x) = \bigg( \frac{e^x}{2\sqrt{x}} - \sqrt{x}e^x \bigg) e^{-2x}
  6. Factor:                                                                                                           \displaystyle f'(x) = \bigg( \frac{1}{2\sqrt{x}} - \sqrt{x} \bigg)e^\big{-x}

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Differentiation

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Answer:

7,042

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