Mastering Functions of Two Variables

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Questions and Answers

Which of the following statements about partial derivatives is true?

  • Partial derivatives are used to find the integral of a function with respect to one variable while keeping the other variables constant.
  • Partial derivatives are used to find the slope of a function with respect to all variables simultaneously.
  • Partial derivatives are used to find the slope of a function with respect to one variable while keeping the other variables constant. (correct)
  • Partial derivatives are used to find the integral of a function with respect to all variables simultaneously.

What does the gradient vector represent?

  • The gradient vector represents the average rate of change of a function.
  • The gradient vector represents the direction of steepest ascent of a function. (correct)
  • The gradient vector represents the direction of steepest descent of a function.
  • The gradient vector represents the instantaneous rate of change of a function.

What does the Chain Rule allow us to do?

  • The Chain Rule allows us to find the derivative of a composition of functions. (correct)
  • The Chain Rule allows us to find the slope of a function with respect to one variable while keeping the other variables constant.
  • The Chain Rule allows us to find the integral of a composition of functions.
  • The Chain Rule allows us to find the slope of a function with respect to all variables simultaneously.

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