Integrating Standard Functions
Overview
Integration is differentiation in reverse: it recovers a function from its rate of change, and it measures areas under curves. As with derivatives, a short list of standard integrals does most of the work, with a neat adjustment for the linear expressions \(ax+b\) that appear inside them.
In this lesson you will integrate powers, sines, cosines and the exponential, including the cases \((ax+b)^n\), \(\sin(ax+b)\), \(\cos(ax+b)\) and \(e^{ax+b}\). You will always add the constant of integration \(+c\) for an indefinite integral, the detail examiners look for first.
Objectives
- Integrate functions of the form (ax + b) to the power n (for any rational n, including n = -1), sin(ax + b), cos(ax + b), sec^2(ax + b) and e to the power (ax + b).
- Include an arbitrary constant of integration for indefinite integrals.
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Integrating Standard Functions. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- What is the integral of x^4 with respect to x? A. 4x^3 + c B. x^5/5 + c C. x^5 + c D. x^3/3 + c Answer: B
- What is the integral of (2x + 1)^3 with respect to x? A. (2x + 1)^4/4 + c B. (2x + 1)^4/8 + c C. 3(2x + 1)^2 + c D. (2x + 1)^4 + c Answer: B
- What is the integral of cos(2x)? A. sin(2x) + c B. (1/2) sin(2x) + c C. -(1/2) sin(2x) + c D. 2 sin(2x) + c Answer: B
- What is the integral of e^{3x}? A. e^{3x} + c B. 3e^{3x} + c C. (1/3) e^{3x} + c D. e^{3x}/x + c Answer: C
- For an indefinite integral, you must always: A. divide by x B. add the constant + c C. multiply by 2 D. take a logarithm Answer: B
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
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Practice Mock Questions
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