Calculus Derivatives and Rates of Change
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Questions and Answers

What is the derivative of the function $f(x) = x^2$ at the point where $x = 2$?

  • 3
  • 2
  • 4 (correct)
  • 5
  • Which of the following correctly represents the substitution of $x_0 = 2$ into the derivative formula?

  • $ rac{(2-h)^2 - 2^2}{h}$
  • $ rac{(2+h)^2 - 2^2}{h}$ (correct)
  • $ rac{(2+h)^2}{h}$
  • $ rac{(2+h)^2 + 2^2}{h}$
  • What is the formula used to calculate the average rate of change?

  • $ rac{f(x_0+h) - f(x_0)}{x_0+h-x_0}$ (correct)
  • $ rac{f(x_0+h) + f(x_0)}{x_0+h-x_0}$
  • $ rac{f(x_0+h) - f(x_0)}{x_0-h}$
  • $ rac{f(x_0) - f(x_0+h)}{x_0+h-x_0}$
  • What type of graph is represented in the content?

    <p>An upward-opening parabola</p> Signup and view all the answers

    What value does $f(2)$ equal when the function is $f(x) = x^2$?

    <p>4</p> Signup and view all the answers

    In the calculation involving the limit, what is the value settled upon as $h$ approaches 0?

    <p>4</p> Signup and view all the answers

    What is the average rate of change calculated for the function over the interval [2, 9]?

    <p>11</p> Signup and view all the answers

    What expression is simplified from $ rac{4h + h^2}{h}$?

    <p>$4 + h$</p> Signup and view all the answers

    If the interval was changed to [3, 6], what would be the value of $f(3)$ for the function $f(x) = x^2$?

    <p>9</p> Signup and view all the answers

    In the context of the average rate of change, what does $h$ represent when calculating the interval's endpoints?

    <p>7</p> Signup and view all the answers

    What is the correct formula for calculating the mean rate of change of a function between two points?

    <p>$ rac{f(x_{2}) - f(x_{1})}{x_{2} - x_{1}}$</p> Signup and view all the answers

    For the interval I = [1; 3], what is the change in $x$?

    <p>2</p> Signup and view all the answers

    When calculating the mean rate of change for the expression ± $ rac{3-1}{30-13}$, what value do you obtain?

    <p>0.25</p> Signup and view all the answers

    In Exercise 2, what is the first step for finding the mean rate of change for ± $ rac{13-10}{30-0}$?

    <p>2</p> Signup and view all the answers

    For the interval I = [-2; -0.6], what is the change in the interval?

    <p>1.4</p> Signup and view all the answers

    What is the derivative of the function $f(x) = 3x^4$ using the power rule?

    <p>$12x^3$</p> Signup and view all the answers

    Using the product rule, what is the derivative of the function $f(x) = (2x)(x^3)$?

    <p>$2x^4 + 6x^3$</p> Signup and view all the answers

    What is the derivative of the function $f(x) = 5 + 7x^2$ using the sum rule?

    <p>$14x$</p> Signup and view all the answers

    Calculate the derivative of $f(x) = x^5 - 4x + 15$ using the rules of differentiation.

    <p>$5x^4 - 4$</p> Signup and view all the answers

    For the function $f(x) = 8x - x^3 + 10$, what is the derivative?

    <p>$8 - 3x^2$</p> Signup and view all the answers

    What is the definition of the derivative of a function at a point $x_{0}$?

    <p>$ rac{f(x_{0}+h) - f(x_{0})}{h}$</p> Signup and view all the answers

    In the simplification process for the derivative of $f(x) = x^{2}$, what does the numerator become after applying the binomial theorem?

    <p>$2x_{0}h + h^{2}$</p> Signup and view all the answers

    What is the final result of taking the limit as $h$ approaches 0 in the derivative calculation of $f(x) = x^{2}$?

    <p>$2x_{0}$</p> Signup and view all the answers

    When simplifying the expression $ rac{2(x_{0})(h) + h^{2}}{h}$, what does it yield?

    <p>$2x_{0} + h$</p> Signup and view all the answers

    Which of the following properties aligns correctly with the binomial expansion used for $(x_{0}+h)^{2}$?

    <p>$x_{0}^{2} + 2(x_{0})(h) + h^{2}$</p> Signup and view all the answers

    What is the derivative of the function $f(x) = 3x^{5} - 7x^{2}$?

    <p>$15x^{4} - 14x$</p> Signup and view all the answers

    What is the correct derivative of the function $f(x) = x^{10}$?

    <p>$10x^{9}$</p> Signup and view all the answers

    For the function $f(x) = x^{2} + 3x^{4}$, what is the derivative $f'(x)$?

    <p>$2x + 12x^{2}$</p> Signup and view all the answers

    What is the derivative of the function $f(x) = 5x^{2} + 2x^{6} - 10x^{3}$?

    <p>$10x + 12x^{5} - 30x^{2}$</p> Signup and view all the answers

    What is the derived expression of the function $f(x) = x^{3} + x^{5}$?

    <p>$3x^{2} + 5x^{3}$</p> Signup and view all the answers

    Study Notes

    Calculating the Derivative at a General Point

    • The derivative of a function f(x) at a point x₀ is calculated using the limit:
      f'(x₀) = lim (h→0) [f(x₀ + h) - f(x₀)] / h

    • This represents the instantaneous rate of change of the function at x₀.

    Example Function: f(x) = x²

    • For x₀ = 2, find f'(2)

    • Substitute x₀ = 2 into the general derivative formula to find f'(2)
      f'(2) = lim (h→0) [(2 + h)² - 2²] / h

    • Expanding and simplifying the expression within the limit: f'(2) = lim (h→0) [4 + 4h + h² - 4] / h f'(2) = lim (h→0) [4h + h²] / h

    • Factor out an 'h' from the numerator and simplify: f'(2) = lim (h→0) h(4 + h) / h f'(2) = lim (h→0) (4 + h)

    • Evaluating the limit as h approaches 0 gives the derivative at x₀ = 2: f'(2) = 4

    • Therefore, the derivative of f(x) = x² at x = 2 is 4.

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    Description

    This quiz focuses on the concepts of derivatives and average rates of change in calculus, specifically using the function f(x) = x^2. It covers calculations at specific points, the definition of average rate of change, and related limits and substitutions. Test your understanding of these fundamental calculus principles.

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