Question

Calculate the area of the region bounded by the graphs of the functions y+x²=6 and y+2x-3=0

275

likes
1375 views

Answer to a math question Calculate the area of the region bounded by the graphs of the functions y+x²=6 and y+2x-3=0

Expert avatar
Fred
4.4
120 Answers
y + x^2 = 6
y + 2x - 3 = 0

[Solução]

A = \int_{-3}^1 (3 - 2x - (6 - x^2)) \, dx = \int_{-3}^1 (-x^2 - 2x - 3) \, dx = \left[ -\frac{x^3}{3} - x^2 - 3x \right]_{-3}^1 = \left( -\frac{1^3}{3} - 1^2 - 3\cdot1 \right) - \left( -\frac{(-3)^3}{3} - (-3)^2 - 3\cdot(-3) \right) = -\frac{1}{3} - 1 - 3 - \left( -\frac{-27}{3} - 9 + 9 \right) = \frac{32}{3}

[Passo a Passo]

1. Encontrar os pontos de interseção resolvendo o sistema:
y + x^2 = 6
y + 2x - 3 = 0
x^2 + 2x - 9 = 0
x = -3, \ x = 1

2. Determinar as funções que delimitam a região e a região de integração:
y = 3 - 2x
y = 6 - x^2
Região entre $x = -3$ e $x = 1$.

3. Calcular a área utilizando a integral:
A = \int_{-3}^1 (3 - 2x - (6 - x^2)) \, dx
A = \int_{-3}^1 (-x^2 - 2x - 3) \, dx

4. Resolver a integral:
\int (-x^2 - 2x - 3) \, dx = -\frac{x^3}{3} - x^2 - 3x

5. Avaliar nos limites:
\left[ -\frac{x^3}{3} - x^2 - 3x \right]_{-3}^1

6. Calcular cada termo:
\left( -\frac{1^3}{3} - 1^2 - 3\cdot1 \right) = -\frac{1}{3} - 1 - 3 = -\frac{10}{3}
\left( -\frac{(-3)^3}{3} - (-3)^2 - 3\cdot(-3) \right) = -\frac{-27}{3} - 9 + 9 = \frac{27}{3} = 9

7. Substituir nos limites de integração:
-\frac{10}{3} - 9 = \frac{32}{3}

Portanto, a área é:
\frac{32}{3}

Frequently asked questions (FAQs)
Math question: What is the 4th derivative of the function f(x) = 5x^3 - 2x^2 + 7x - 4?
+
What is the equation of the ellipse with foci at (±2,0) and major axis length 10?
+
Math question: Find the slope-intercept equation of a line passing through point (3, 5) with a slope of 2.
+
New questions in Mathematics
Solution to the equation y'' - y' - 6y = 0
Karina has a plot of 5,000 square meters in which she has decided that 60% of it will be used to plant vegetables. Of this part, 12% will be dedicated to planting lettuce. How much surface area of the plot will be used for cultivation?
What is the amount of interest of 75,000 at 3.45% per year, at the end of 12 years and 6 months?
Revenue Maximization: A company sells products at a price of $50 per unit. The demand function is p = 100 - q, where p is the price and q is the quantity sold. How many units should they sell to maximize revenue?
A book is between 400 and 450 pages. If we count them 2 at a time there is none left over, if we count them 5 at a time there is none left over and if we count them 7 at a time there are none left over, how many pages does the book have?
Consider the relation R defined on the set of positive integers as (x,y) ∈ R if x divides y. Choose all the true statements. R is reflexive. R is symmetric. R is antisymmetric. R is transitive. R is a partial order. R is a total order. R is an equivalence relation.
what is the annual rate on ​$525 at 0.046​% per day for 3 months?
The beta of a company is 1,41 and its cost of equity 18,95%. What is then the market risk premium if the risk free rate is 0,94%? (in %, 2 decimal places)
calculate the normal vector of line y = -0.75x + 3
Desarrolla (2x)(3y + 2x)5
Solve : 15/16 divide 12/8 =x/y
Nice's central library building is considered one of the most original in the world, as it is a mix between a sculpture and a work of habitable architecture. It was called La Tête Carrée and is made up of part of a bust that supports a cube divided into five floors. It is known that the building has a total height of approximately 30 meters. It admits that the cubic part of the sculpture is parallel to the floor and has a volume of 2744 meters3 Calculate, in meters, the height of the bust that supports the cube. Displays all the calculations you made.
A storage maker price is $2.50 per square feet. Find the price of a custom shed 4 yards long, and 5yards wide and 8 feet tall
A researcher is interested in voting preferences on change of the governing constitution in a certain country controlled by two main parties A and B. A questionnaire was developed and sent to a random sample of voters. The cross tabs are as follows Favour Neutral Oppose Membership: Party A 70 90 85 Party B 50 50 155 Test at α = 0.05 whether party membership and voting preference are associated and state the conditions required for chi-square test results to be valid.
A loan is repaid with payments of $2226 made at the end of each month for 12 years. If interest on the loan is 5.2%, compounded semi-annually, what is the initial value of the loan? Enter to the nearest cent (two decimals). Do not use $ signs or commas.
solid obtained by rotation around the axis x = -1, the region delimited by x^2 - x + y = 0 and the abscissa axis
2 - 6x = -16x + 28
2.3 X 0.8
Emile organizes a community dance to raise funds. In addition to paying $300 to rent the room, she must rent chairs at $2 each. The quantity of chairs rented will be equal to the number of tickets sold. She sells tickets for $7 each. How much should she sell to raise money?
Matilde knows that, when driving her car from her office to her apartment, she spends a normal time of x minutes. In the last week, you have noticed that when driving at 50 mph (miles per hour), you arrive home 4 minutes earlier than normal, and when driving at 40 mph, you arrive home 5 minutes earlier later than normal. If the distance between your office and your apartment is y miles, calculate x + y.