How to Solve the Integral 2x((1-x^2)^(1/2)) and Evaluate at x=1

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SUMMARY

The integral of the function 2x√(1-x²) can be effectively solved using the substitution method with u = 1 - x². This approach simplifies the integral and avoids complications that arise from using integration by parts or other methods. Evaluating the integral at x = 1 results in a numerator of 0, which is not problematic since the integrand does not have a denominator that could lead to undefined behavior.

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Homework Statement


Integral 2x((1-x^2)^(1/2))

Homework Equations

The Attempt at a Solution


ive tried integration by parts, i tried substitution and i can't get it to work. i also need to figure the integral when x=1 and i keep getting 0 in the numerator. What is the best point of attack?
 
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You can use the chain rule for this integral. It is straightforward.
 
Wi_N said:

Homework Statement


Integral 2x((1-x^2)^(1/2))

Homework Equations

The Attempt at a Solution


ive tried integration by parts, i tried substitution and i can't get it to work. i also need to figure the integral when x=1 and i keep getting 0 in the numerator. What is the best point of attack?
What happens when you try ##u=1-x^2##?
 
Wi_N said:

Homework Statement


Integral 2x((1-x^2)^(1/2))

Homework Equations

The Attempt at a Solution


ive tried integration by parts, i tried substitution and i can't get it to work. i also need to figure the integral when x=1 and i keep getting 0 in the numerator. What is the best point of attack?
From the way you've written the integrand, you don't have a denominator, so getting the numerator = 0 isn't that big a deal.

It's when the denominator = 0 that things blow up. :wink: :frown:


tsar-bomba1.jpg


 

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