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
118 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)
What is the surface area of a rectangular prism with dimensions 5cm, 4cm, and 3cm?
+
Math question: "Find the absolute extrema of f(x) = x^3 - 6x^2 + 9x - 2 on the interval [0, 4]."
+
What is the surface area of a cube with side length 6 cm?
+
New questions in Mathematics
Pedro bought 9 kg of sugar at the price of R$1.80 per kilogram, six packets of coffee at the price of R$3.90 per packet and 8 kg of rice at the price of R$2.70 per kilogram. Knowing that he paid for the purchases with a R$100.00 bill, how much change did he receive?
431414-1*(11111-1)-4*(5*3)
I need .23 turned into a fraction
58+861-87
The graph of the equation x²= 4py is a parabola with focus F(_,_) and directrix y=_____ Therefore, the graph of x²=12y is a parabola with focus F(_,_) and a directrix y=_____
The sum of two numbers is 6, and the sum of their squares is 28. Find these numbers exactly
what is the annual rate on ​$525 at 0.046​% per day for 3 months?
7/6-(-1/9)
2/3+5/6×1/2
A company that manufactures personal hygiene items purchases machinery for $220,000 that is considered to last 7 years; it is estimated that at the end of the period it will have a salvage value of $1000. Find: to. The depreciation rate. b. The book value at the end of the sixth year.
Find 2 numbers whose sum is 47 and whose subtraction is 13
The price per night of a suite at the Baglioni Hotel in Venice is 1896 euros, VAT included. The VAT in Italy is 25%. The hotel gets a return of 10% out of the price VAT included. a) What is the amount of VAT paid by the hotel for one
Estimate the quotient for 3.24 ÷ 82
Convert 9/13 to a percent
John he’s going to the carnival with his friends. He spends $25 on an admission ticket. He buys 10 games at X dollars each and two boxes of popcorn at Y dollars each. Write an expression to show the total cost of admission game, tickets and popcorn.
P(Z<z)=0.1003
9.25=2pi r solve for r
Find the vertex F(x)=x^2-10x
Perform operations with the polynomials P(x) = x3 and Q(x) = 2x2 + x – 3x3 : a) P(x) - Q(x)
2.3 X 0.8