Finding the area of the loop of the curve y^2=x^3(1-x)^2

In summary, the problem asks to find the area of the loop of the curve y^2 = x^3(1-x)^2 using integral calculus. To sketch the curve, values for x are assigned and the corresponding values of y are solved. The ± is important in the equation to indicate the presence of a loop. There are two x-intercepts that can be found to solve the problem.
  • #1
stardust006
9
0
Find the area of the loop of the curve y^2=x^3(1-x)^2 using integral calculus.

y=√x^3(1-x)^2
y=√x^3/2 (1-x)


To sketch the curve, I assigned values for x and then solved the corresponding values of y.

x= -1, y= -2
x= -0.5, y= -0.53
x=0, y= 0
x= 0.5, y= 0.177
x=1, y=0

how can i find the area of this? >.<
 
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  • #2
stardust006 said:
Find the area of the loop of the curve y^2=x^3(1-x)^2 using integral calculus.
                   The following needs extra parentheses to be correct.
y=(√x^3(1-x)^2)    
y=√x^3/2 (1-x)    This should be y = ±√(x3) (1-x) or y = ±x3/2 (1-x) .

To sketch the curve, I assigned values for x and then solved the corresponding values of y.

x= -1, y= -2
x= -0.5, y= -0.53
x=0, y= 0
x= 0.5, y= 0.177
x=1, y=0

how can i find the area of this? >.<
Hello stardust006. Welcome to PF !

The ± is important. It gives a clue as to why the graph has a loop.

There are two x-intercepts. Can you find them ?
 
  • #3
Thank you, I should practice my math T.T
 

1. What is the equation for finding the area of the loop of the curve?

The equation for finding the area of the loop of the curve y^2=x^3(1-x)^2 is A = ∫(x2 - x3)dx from x = 0 to x = 1.

2. How do I solve for the area of the loop?

To solve for the area of the loop, you can use the definite integral formula A = ∫(x2 - x3)dx from x = 0 to x = 1. You will need to first integrate the function and then substitute the limits of integration to find the area.

3. Can I use any other method to find the area of the loop?

Yes, you can also use the disk method or the washer method to find the area of the loop. However, these methods will require you to have knowledge of calculus and be able to set up and solve the integral.

4. What does the variable x represent in the equation?

The variable x represents the horizontal distance along the x-axis. It is the independent variable in the equation and determines the shape and size of the loop.

5. How can I visualize the loop of the curve to better understand the problem?

You can plot the equation y^2=x^3(1-x)^2 on a graphing calculator or software to visualize the loop of the curve. You can also sketch the curve by hand to get a better understanding of the shape and size of the loop.

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