교과서 질문
23-64. Integration Evaluate the following integrals.
62. ∫ 1/[(x + 1)(x² + 2x + 2)²] dx
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Ch. 8 - Integration Techniques
Briggs3rd EditionCalculus: Early TranscendentalsISBN: 9780136847243
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Table of contents
- Ch. 1 - Functions210
- Ch. 2 - Limits371
- Ch. 3 - Derivatives633
- Ch. 4 - Applications of the Derivative412
- Ch. 5 - Integration328
- Ch. 6 - Applications of Integration331
- Ch. 7 - Logarithmic, Exponential Functions, and Hyperbolic Functions177
- Ch. 8 - Integration Techniques394
- Ch. 9 - Differential Equations179
- Ch. 10 - Sequences and Infinite Series339
- Ch. 11 - Power Series218
- Ch.12 - Parametric and Polar Curves215
8장, 문제 8.6.97
92–98. Evaluate the following integrals.
97. ∫ tan⁻¹(∛x) dx
검증된 단계별 안내1
Step 1: Recognize that the integral involves the inverse tangent function, tan⁻¹, and a cube root, ∛x. To simplify the integration, consider using substitution. Let u = ∛x, which implies x = u³ and dx = 3u² du.
Step 2: Substitute u = ∛x into the integral. Replace tan⁻¹(∛x) with tan⁻¹(u) and dx with 3u² du. The integral becomes ∫ tan⁻¹(u) * 3u² du.
Step 3: Factor out the constant 3 from the integral to simplify. The integral now becomes 3 ∫ u² * tan⁻¹(u) du.
Step 4: To solve ∫ u² * tan⁻¹(u) du, use integration by parts. Recall the formula for integration by parts: ∫ v dw = uv - ∫ u dv. Let v = tan⁻¹(u) and dw = u² du. Compute dv and u accordingly.
Step 5: After applying integration by parts, simplify the resulting expression. Substitute back u = ∛x to express the solution in terms of x.
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주요 개념
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Integration
Integration is a fundamental concept in calculus that involves finding the integral of a function, which represents the area under the curve of that function. It can be thought of as the reverse process of differentiation. There are various techniques for integration, including substitution, integration by parts, and recognizing standard forms.
추천 영상:
06:18
Integration by Parts for Definite Integrals
Inverse Functions
Inverse functions are functions that reverse the effect of the original function. For example, the inverse of the tangent function is the arctangent function, denoted as tan⁻¹(x). Understanding how to work with inverse functions is crucial when integrating functions that involve them, as it often simplifies the integration process.
추천 영상:
4:49Inverse Cosine
Chain Rule
The chain rule is a fundamental technique in calculus used to differentiate composite functions. When integrating functions that are composed of other functions, such as tan⁻¹(∛x), recognizing the inner function and applying the chain rule can help in simplifying the integral. This rule is essential for correctly applying substitution methods in integration.
추천 영상:
05:02Intro to the Chain Rule
관련 실천
교과서 질문
Use a substitution to reduce the following integrals to ∫ ln u du. Then evaluate using the formula for ∫ ln x dx.
7. ∫ (sec²x) · ln(tan x + 2) dx
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교과서 질문
7–40. Table look-up integrals Use a table of integrals to evaluate the following indefinite integrals. Some of the integrals require preliminary work, such as completing the square or changing variables, before they can be found in a table.
11. ∫ 3u / (2u + 7) du
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교과서 질문
{Use of Tech} Using the integral of sec³u By reduction formula 4 in Section 8.3,
∫sec³u du = 1/2 (sec u tan u + ln |sec u + tan u|) + C
Graph the following functions and find the area under the curve on the given interval.
f(x) = 1/(x√(x² - 36)), [12/√3 , 12]
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교과서 질문
49–52. {Use of Tech} Simpson’s Rule
Apply Simpson’s Rule to the following integrals. It is easiest to obtain the Simpson’s Rule approximations from the Trapezoid Rule approximations, as in Example 8. Make a table similar to Table 8.8 showing the approximations and errors for n = 4, 8, 16, and 32. The exact values of the integrals are given for computing the error.
51. ∫(from 0 to π) e⁻ᵗ sin(t) dt = ½(e⁻ᵖⁱ + 1)
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교과서 질문
7-56. Trigonometric substitutions Evaluate the following integrals using trigonometric substitution.
44. ∫ 1/√(16 + 4x²) dx
90
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