ENGR121 Limits and Assignment Guidelines
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Questions and Answers

What is the value of $ ext{lim}_{x o -1} f(x)$ for the function defined as $f(x) = \begin{cases} x^3 & \text{if } x < 1 \ x^2 & \text{if } x \geq 1 \end{cases}$?

  • 0
  • -1 (correct)
  • 1
  • undefined
  • The limit $ ext{lim}_{t o 2} \frac{t^2 - 4t + 4}{t - 2}$ is equal to 0.

    False

    What is the derivative of $y(x) = 7x^2$ using the definition of a derivative?

    14x

    If the slope of the function $y(x)$ is 10, then we can say that the function is _____ at that point.

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

    Which of the following describes the function $y(x) = \begin{cases} \cos(x) & \text{if } x \geq 0 \ -2x + 1 & \text{if } x < 0 \end{cases}$?

    <p>Has points where the derivative does not exist</p> Signup and view all the answers

    Find the limit $ ext{lim}_{t o 0} \frac{t^2 - 4t + 4}{t - 2}$.

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

    Match the following functions with their derivatives:

    <p>y(x) = 2x - 10 = y'(x) = 2 y(x) = x = y'(x) = 1 y(x) = 7x^2 = y'(x) = 14x y(x) = -2x + 1 = y'(x) = -2</p> Signup and view all the answers

    The limit as $x$ approaches 1 for the function $f(x)$ is _____ for the second part of the piecewise function.

    <p>1</p> Signup and view all the answers

    Study Notes

    Assignment Overview

    • Due date: 11:59 PM, Wednesday, 8 May 2024
    • Submission format: Online via designated link, single PDF file
    • File naming convention: Must end with yourUserName.pdf

    Limit Calculations

    • Task involves finding limits for given functions

    • Example function for limits:

      • ( f(x) = \begin{cases} x^3 & \text{if } x < 1 \ x^2 & \text{if } x \geq 1 \end{cases} )
      • Compute:
        • ( \lim_{x \to -1} f(x) )
        • ( \lim_{x \to 1} f(x) )
    • Additional limits to evaluate:

      • ( \lim_{t \to 2} \frac{t^2 - 4t + 4}{t - 2} )
      • ( \lim_{t \to 0} \frac{t^2 - 4t + 4}{t - 2} )

    Derivative Calculations

    • Derivatives must be calculated using the definition of a derivative, not relying on common derivative tables
    • Functions to find derivatives for:
      • ( y(x) = 7x^2 )
      • ( y(x) = 2x - 10 )
      • ( y(x) = x )

    Function Slope Inquiry

    • The slope of the function ( y(x) ) is given as 10
    • Explanation required discussing implications for the behavior of the function

    Derivative Existence Analysis

    • Analyze a piecewise function:
      • ( y(x) = \begin{cases} \cos(x) & \text{if } x \geq 0 \ -2x + 1 & \text{if } x < 0 \end{cases} )
    • Objective:
      • Determine if there are points where the derivative does not exist
      • Justification should be based on logical reasoning rather than graph analysis

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    Related Documents

    ENGR121 Assignment 5 PDF

    Description

    This quiz focuses on the properties and calculations of limits in engineering mathematics. Assignment 5 emphasizes the importance of understanding limits and provides guidelines for submission. Ensure to follow the submission format as specified for full marks.

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