I am having problem with two math questions that I have been asked to try and although I do not need to do them they are really frustrating me.(adsbygoogle = window.adsbygoogle || []).push({});

First off intergrate (x-1)/squareroot(4x^2-1)

I am sure this is something to do with replacing x to get cos^2 (x)-1 so that this becomes 2cos(2x) but I can't intergrate from there either.

Also intergrate 1/squareroot(1+8x-4x^2) again I am sure it is a substitution for trig but I just can't see it.

Any help would be greatly appreciated. Sorry I caan't lay the questions out any better

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# Homework Help: Help needed Please

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