Question

Draw the shape of region D limited by the xy=1 curve, y=x and x=e lines. Calculate the mass of the plate with density σ(x,y)=xy placed on this region.

199

likes
995 views

Answer to a math question Draw the shape of region D limited by the xy=1 curve, y=x and x=e lines. Calculate the mass of the plate with density σ(x,y)=xy placed on this region.

Expert avatar
Brice
4.8
113 Answers
Verilen eğrilerin kesiştiği noktaları bulmak için;
1. y=x doğrusu ile xy=1 eğrisini çözelim.
2. x=e doğrusu ile xy=1 eğrisini çözelim.

Noktaları bulduktan sonra, bu üç doğru arasında kalan bölgenin şeklini çizeceğiz.

1. y=x doğrusu ile xy=1 eğrisini çözelim:
y=x \quad ve \quad xy=1 eşitlerini birbirine eşitleyerek çözelim:
x\cdot x = 1 \Rightarrow x^2 = 1 \Rightarrow x = 1
x = 1 değerini y=x doğrusuna koyarsak, y=1 olur.
Bu durumda kesişim noktası (1, 1) olur.

2. x=e doğrusu ile xy=1 eğrisini çözelim:
x=e \quad ve \quad xy=1 eşitlerini birbirine eşitleyerek çözelim:
e\cdot y = 1
y = \frac{1}{e}

Bu durumda kesişim noktası (e, \frac{1}{e}) olur.

Şimdi bu üç noktayı birbirleriyle birleştirerek, verilen bölgenin şeklini çizelim:
- (1, 1) noktası y=x doğrusu ve xy=1 eğrisiyle,
- (e, \frac{1}{e}) noktası x=e doğrusu ve xy=1 eğrisiyle,
- (e, \frac{1}{e}) ve (1, 1) noktaları y=x doğrusu ile birleştirilerek oluşturulur.

Şimdi bu bölgenin alanını hesaplayacağız. Bölge, bir üçgen şeklinde olduğundan, alanını bulmak için taban uzunluğunu ve yüksekliği hesaplayacağız:
Taban uzunluğu: e - 1
Yükseklik: \frac{1}{e} - 1

Bu durumda, bölgenin alanı:
A = \frac{1}{2} \cdot \text{Taban uzunluğu} \cdot \text{Yükseklik} = \frac{1}{2} \cdot (e - 1) \cdot \left(\frac{1}{e} - 1 \right)

Şimdi bu bölge üzerine yerleştirilen \sigma(x,y)=xy yoğunluklu levhanın kütlesini hesaplayalım. Bölgenin alanını kullanarak bu işlemi gerçekleştireceğiz:
\text{Kütle} = \iint_D \sigma(x,y) \, dA = \iint_D xy \, dA
\text{Kütle} = \int_1^e \int_1^\frac{1}{x} xy \, dydx

Yukarıdaki denklemi çözerek kütleyi hesaplayın.

\textbf{Yanıt:}
\text{Bölgenin Alanı: } A = \frac{1}{2} \cdot (e - 1) \cdot \left(\frac{1}{e} - 1 \right)
\text{Levhanın Kütle: } \text{Kütle} = \int_1^e \int_1^\frac{1}{x} xy \, dydx

Frequently asked questions (FAQs)
What is 3.5 as a percent?
+
Question: In triangle ABC, the angle bisector of ∠A intersects side BC at point D. If AD = 12 cm and BD = 8 cm, what is the length of DC?
+
What is the sum of 413 and 687?
+
New questions in Mathematics
If we have the sequence: 3, 6, 12, 24 Please determine the 14th term.
find the value of the tangent if it is known that the cos@= 1 2 and the sine is negative. must perform procedures.
Calculate the 6th term of PA whose 1st term is 6.5 and the ratio 5
I) Find the directional derivative of 𝑓(𝑥, 𝑦) = 𝑥 sin 𝑦 at (1,0) in the direction of the unit vector that make an angle of 𝜋/4 with positive 𝑥-axis.
what is the annual rate on ​$525 at 0.046​% per day for 3 months?
Find all real numbers x that satisfy the equation \sqrt{x^2-2}=\sqrt{3-x}
What’s the slope of a tangent line at x=1 for f(x)=x2. We can find the slopes of a sequence of secant lines that get closer and closer to the tangent line. What we are working towards is the process of finding a “limit” which is a foundational topic of calculus.
reduce the expression (7.5x 12)÷0.3
89, ÷ 10
How to do 15 x 3304
When Sara was 15 years old, an uncle left her as inheritanceà a sum of 10,000 euros which he invested in a bank that applies the interest rate of 2,5% annual. Today Sara is 18 years and wants to buy a'car, how much she can ò withdraw from the bank?
Associate each 2nd degree equation with its respective roots. A) x2+6x+8=0 B)x2-5x-6=0
The average undergraduate cost per tuition, fees, room, and board for all institutions last year was $26,025. A random sample of 40 institutions of higher learning this year indicated that the mean tuition, fees, room, and board for the sample was $27,690, and the population standard deviation is $5492. At the 0.05 level of significance, is there sufficient evidence that the cost has increased? (Remember to follow the steps in hypothesis testing)
Consider the function f(x)=1/2(x+1)^2-3. Use the preceding/following interval method to estimate the instantaneous rate of change at 𝑥 = 1.
Find I (Intrest) using simple interest formula of 17700 @ 15% for 4 years
8. Measurement Jillian measured the distance around a small fish pond to be 27 yards. What would be a good estimate of the distance across the pond: 14 yards, 9 yards, or 7 yards? Explain how you decided.
g(x)=3(x+8). What is the value of g(12)
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 55.0 min at 100.0 km/h, 14.0 min at 65.0 km/h, and 45.0 min at 60.0 km/h and spends 20.0 min eating lunch and buying gas. (a) Determine the average speed for the trip.
Find the number of liters of water needed to reduce 9 liters of lotion. shave containing 50% alcohol to a lotion containing 30% alcohol.
Construct a set of six pieces of data with​ mean, median, and midrange of 67 and where no two pieces of data are the same.