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Integral Calculus

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Joined:	6 Jan 2007
Post:	706

23 Feb 2007 15:19:40 IST

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518

Simple but tricky!!!

None

Evaluate

dx/(1+x⁴)

PS: It is not all that difficult!!!

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$h0cK3r

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Joined: 27 Dec 2006

Posts: 565

23 Feb 2007 15:35:42 IST

Like 2 people liked this

even i think so

dx/(1+x⁴)

we write this as

1/x²dx/(x²+1/x²)

multiply and divide by two

and change the expression in this form

1/2[

(1+1/x²)dx/((x-1/x)²+2) -

(1-1/x²)dx/((x+1/x)²-2 ))

now u can easily integrate

CyBorG

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Joined: 6 Jan 2007

Posts: 706

23 Feb 2007 15:53:51 IST

Like 0 people liked this

You are right Shakirshafi12!!!

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