how is this: (4+x^2)/sqrt(4+x^2) the same as sqrt(4+x^2) ?? could someone explain step by step? thanks
Last edited by situation; December 2nd 2010 at 11:28 AM. Reason: fixing equation
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Originally Posted by situation how is this: (4+x^2)/sqrt(4+x^2) the same as 4+x^2 ?? could someone explain step by step? thanks Hint: for positive . Prove it! Tonio Ps. By the way, your quiestion is incorrect, of course.
If you let then you get which is u. Alternatively, recall that
Originally Posted by situation how is this: (4+x^2)/sqrt(4+x^2) the same as 4+x^2 ?? could someone explain step by step? thanks do you mean ?? That is not true... Actually
Originally Posted by e^(i*pi) If you let then you get which is u. Alternatively, recall that god i feel stupid now! thank you
Originally Posted by harish21 do you mean ?? That is not true... Actually that is what i meant sorry just couldnt see it!
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