please solve this integration

ramizashraf

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Jul 7, 2006
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1
:( PLEASE SOLVE THIS

f [ integration sign ] under root A square + under root X square dx

evaluate this . dx is not under the root. ok :( [/code][/list]
 
Just to clarify, if this the question you stated?

\(\displaystyle \L\int {\frac{{dx}}{{\sqrt {a^2 + x^2 } }}}\)

please learn latex or type more precisely.

if that is indeed the problem, then you should know to use the substitution:
let \(\displaystyle x = a\tan \theta\)
 
Hello, ramizashraf!

I don't think you meant what you wrote . . .


You wrote:

\(\displaystyle \text{[ integration sign ] }\underbrace{under\,root\,A\,square} \,+\,\underbrace{\text{under root }x\,square}\; dx\)
. . . . . . . . . . . . . . . . . . . . . . . . . . \(\displaystyle \sqrt{A^2}\) . . . . . . . . . . . . . . . . .\(\displaystyle \sqrt{x^2}\)

And this is just: \(\displaystyle \,\int(A\,+\,x)\,dx\) . . . not very challenging!
 
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