Skip to main content
Ch. 2 - Graphs of the Trigonometric Functions; Inverse Trigonometric Functions
Blitzer - Trigonometry 3rd Edition
Blitzer3rd EditionTrigonometryISBN: 9780137316601당신이 사용하는 게 아니라요?교과서 변경
2장, 문제 99

The graphs of y = sin⁻¹ x, y = cos⁻¹ x, and y = tan⁻¹ x are shown in Table 2.8. In Exercises 97–106, use transformations (vertical shifts, horizontal shifts, reflections, stretching, or shrinking) of these graphs to graph each function. Then use interval notation to give the function's domain and range. f(x) = cos⁻¹ (x + 1)

검증된 단계별 안내
1
Identify the base function: here, the base function is the inverse cosine function, written as \(y = \cos^{-1} x\).
Recognize the transformation inside the function: the function is \(f(x) = \cos^{-1} (x + 1)\), which means the input to the inverse cosine is shifted horizontally by -1 (to the left by 1 unit).
Determine the domain of the transformed function by considering the domain of the original \(\cos^{-1} x\), which is \([-1, 1]\). Since the input is \(x + 1\), set \(-1 \leq x + 1 \leq 1\) and solve for \(x\) to find the new domain.
Recall that the range of \(\cos^{-1} x\) is \([0, \pi]\). Since the transformation is only horizontal (inside the function), the range remains unchanged.
Summarize the domain and range in interval notation based on the calculations and transformations applied.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
6m
도움이 되었나요?

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Inverse Trigonometric Functions

Inverse trigonometric functions like cos⁻¹(x) return the angle whose cosine is x. They have specific domains and ranges, for example, cos⁻¹(x) is defined for x in [-1,1] with range [0, π]. Understanding these functions is essential to interpret and graph transformations correctly.
추천 영상:
4:28
Introduction to Inverse Trig Functions

Graph Transformations

Graph transformations include shifts, reflections, stretches, and shrinks applied to a base graph. For f(x) = cos⁻¹(x + 1), the '+1' inside the function causes a horizontal shift left by 1 unit. Recognizing how these transformations affect the graph helps in sketching and determining domain and range.
추천 영상:
5:25
Introduction to Transformations

Domain and Range of Transformed Functions

The domain and range of a function can change after transformations. For cos⁻¹(x + 1), the domain shifts accordingly, affecting the input values allowed. Using interval notation to express these sets precisely is crucial for fully describing the function's behavior.
추천 영상:
4:22
Domain and Range of Function Transformations
관련 실천
교과서 질문

In Exercises 83–94, use a right triangle to write each expression as an algebraic expression. Assume that x is positive and that the given inverse trigonometric function is defined for the expression in x. csc (cot⁻¹ x)

760
views
교과서 질문

The graphs of y = sin⁻¹ x, y = cos⁻¹ x, and y = tan⁻¹ x are shown in Table 2.8. In Exercises 97–106, use transformations (vertical shifts, horizontal shifts, reflections, stretching, or shrinking) of these graphs to graph each function. Then use interval notation to give the function's domain and range. f(x) = sin⁻¹ x + π/2

690
views
교과서 질문

The graphs of y = sin⁻¹ x, y = cos⁻¹ x, and y = tan⁻¹ x are shown in Table 2.8. In Exercises 97–106, use transformations (vertical shifts, horizontal shifts, reflections, stretching, or shrinking) of these graphs to graph each function. Then use interval notation to give the function's domain and range. f(x) = cos⁻¹ x/2

689
views
교과서 질문

The graphs of y = sin⁻¹ x, y = cos⁻¹ x, and y = tan⁻¹ x are shown in Table 2.8. In Exercises 97–106, use transformations (vertical shifts, horizontal shifts, reflections, stretching, or shrinking) of these graphs to graph each function. Then use interval notation to give the function's domain and range. h(x) = −2 tan⁻¹ x

760
views
교과서 질문

In Exercises 83–94, use a right triangle to write each expression as an algebraic expression. Assume that x is positive and that the given inverse trigonometric function is defined for the expression in x. ___ sec (sin⁻¹ x/√x²+4)

821
views