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Popular Calculus >

area x=y,4x+y^2=12

Solution

area

x = y, 4 x + y^{2} = 12

Solution

\frac{64}{3}

+1

Decimal

21.33333 \dots

Solution steps

Isolate

y

for

x = y : y = x

Isolate

y

for

4 x + y^{2} = 12 : y = 2 3 - x, y = - 2 3 - x

f_{1} (x) = x

f_{2} (x) = 2 3 - x

To find the intersection points solve

f_{i} (x) = f_{j} (x)

x = 2 3 - x : x = 2

x = - 2 3 - x : x = - 6

2 3 - x = - 2 3 - x : x = 3

= \int_{- 6}^{2} ∣ f_{1} (x) - f_{3} (x) ∣ d x + \int_{2}^{3} ∣ f_{3} (x) - f_{2} (x) ∣ d x

= \int_{- 6}^{2} x - (- 2 3 - x) d x + \int_{2}^{3} - 2 3 - x - 2 3 - x d x

\int_{- 6}^{2} x - (- 2 3 - x) d x = \frac{56}{3}

\int_{2}^{3} - 2 3 - x - 2 3 - x d x = \frac{8}{3}

= \frac{56}{3} + \frac{8}{3}

Simplify

= \frac{64}{3}

Graph

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Frequently Asked Questions (FAQ)

What is area x=y,4x+y^2=12 ?
The answer to area x=y,4x+y^2=12 is 64/3