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egoroff_w [7]
3 years ago
11

Differentiate the function. y = (2x - 5)^2 (5 - x)?​

Mathematics
1 answer:
Gala2k [10]3 years ago
7 0

Answer:

\displaystyle y' = -(2x - 5)(6x - 25)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients
  • Factoring

<u>Calculus</u>

Derivatives

Derivative Notation

Derivative of a constant is 0

Basic Power Rule:

  • f(x) = cxⁿ
  • f’(x) = c·nxⁿ⁻¹

Derivative Rule [Product Rule]:                                                                                    \displaystyle \frac{d}{dx} [f(x)g(x)]=f'(x)g(x) + g'(x)f(x)

Derivative Rule [Chain Rule]:                                                                                       \displaystyle \frac{d}{dx}[f(g(x))] =f'(g(x)) \cdot g'(x)

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

y = (2x - 5)²(5 - x)

<u>Step 2: Differentiate</u>

  1. Derivative Rule [Product Rule]:                                                                        \displaystyle y' = \frac{d}{dx}[(2x - 5)^2](5 - x) + (2x - 5)^2\frac{d}{dx}[(5 - x)]
  2. Chain Rule [Basic Power Rule]:                                                                        \displaystyle y' = [2(2x - 5)^{2 - 1} \cdot \frac{d}{dx}[2x]](5 - x) + (2x - 5)^2\frac{d}{dx}[(5 - x)]
  3. Simplify:                                                                                                             \displaystyle y' = [2(2x - 5) \cdot \frac{d}{dx}[2x]](5 - x) + (2x - 5)^2\frac{d}{dx}[(5 - x)]
  4. Basic Power Rule:                                                                                             \displaystyle y' = [2(2x - 5) \cdot 1 \cdot 2x^{1 - 1}](5 - x) + (2x - 5)^2(1 \cdot -x^{1 - 1})]
  5. Simplify:                                                                                                             \displaystyle y' = [2(2x - 5) \cdot 2](5 - x) + (2x - 5)^2(-1)
  6. Multiply:                                                                                                             \displaystyle y' = 4(2x - 5)(5 - x) - (2x - 5)^2
  7. Factor:                                                                                                               \displaystyle y' = (2x - 5)[4(5 - x) - (2x - 5)]
  8. [Distributive Property] Distribute 4:                                                                 \displaystyle y' = (2x - 5)[20 - 4x - (2x - 5)]
  9. [Distributive Property] Distribute negative:                                                    \displaystyle y' = (2x - 5)[20 - 4x - 2x + 5]
  10. [Subtraction] Combine like terms (x):                                                              \displaystyle y' = (2x - 5)[20 - 6x + 5]
  11. [Addition] Combine like terms:                                                                        \displaystyle y' = (2x - 5)(25 - 6x)
  12. Factor:                                                                                                               \displaystyle y' = -(2x - 5)(6x - 25)

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

Unit: Derivatives

Book: College Calculus 10e

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