교과서 질문
Find the derivatives of the functions in Exercises 1–42.
𝓻 = ( sin θ )²
( cos θ - 1 )
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Ch. 3 - Derivatives
Hass15th EditionThomas' CalculusISBN: 9780137616077
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TOC.tableOfContents
- Ch. 1 - Functions155
- Ch. 2 - Limits and Continuity240
- Ch. 3 - Derivatives337
- Ch. 4 - Applications of Derivatives293
- Ch. 5 - Integrals41
- Ch. 6 - Applications of Definite Integrals25
- Ch. 7 - Transcendental Functions490
- Ch. 8 - Techniques of Integration399
- Ch. 9 - First-Order Differential Equations66
- Ch. 10 - Infinite Sequences and Series132
- Ch. 11 - Parametric Equations and Polar Coordinates58
3장, 문제 3.1.30
Rates of Change
Speed of a rocket At t sec after liftoff, the height of a rocket is 3t² ft. How fast is the rocket climbing 10 sec after liftoff?
검증된 단계별 안내1
To find how fast the rocket is climbing, we need to determine the rate of change of the height with respect to time, which is the derivative of the height function.
The height of the rocket as a function of time is given by h(t) = 3t². We need to find the derivative of this function, h'(t), to get the velocity function.
Differentiate h(t) = 3t² with respect to t. Using the power rule, the derivative of t² is 2t, so h'(t) = 3 * 2t = 6t.
Now that we have the velocity function h'(t) = 6t, we can find the velocity at a specific time by substituting t = 10 seconds into this derivative.
Substitute t = 10 into h'(t) = 6t to find the velocity of the rocket at 10 seconds. This will give you the rate at which the rocket is climbing at that moment.
비슷한 문제에 대한 검증된 영상 답변:
이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
4m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Derivative
The derivative of a function measures the rate at which the function's value changes as its input changes. In the context of the rocket's height, the derivative of the height function with respect to time will give us the rocket's speed at any given moment.
추천 영상:
가이드 코스
05:44
Derivatives
Function of Time
In this problem, the height of the rocket is expressed as a function of time, specifically h(t) = 3t². Understanding how to interpret and manipulate this function is crucial for determining the rocket's height and speed at specific time intervals.
추천 영상:
6:13Exponential Functions
Application of the Chain Rule
The chain rule is a fundamental principle in calculus used to differentiate composite functions. In this scenario, while the height function is straightforward, recognizing how to apply differentiation rules effectively is essential for calculating the speed of the rocket at the specified time.
추천 영상:
05:02Intro to the Chain Rule
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r cos 2s + sin²s = π
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In Exercises 29–34, each function f(x) changes value when x changes from x₀ to x₀ + dx. Find
a. the change Δf = f(x₀ + dx) − f(x₀);
b. the value of the estimate df = fʹ(x₀) dx; and
c. the approximation error |Δf − df|.
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f(x) = x² + 2x, x₀ = 1, dx = 0.1
191
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교과서 질문
A melting ice layer A spherical iron ball 8 in. in diameter is coated with a layer of ice of uniform thickness. If the ice melts at the rate of 10 in³/min, how fast is the thickness of the ice decreasing when it is 2 in. thick? How fast is the outer surface area of ice decreasing?
215
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