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Topic: making a parameter in an integrand real
Replies: 3   Last Post: Feb 26, 2011 6:08 AM

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alan

Posts: 3
Registered: 9/10/10
making a parameter in an integrand real
Posted: Feb 25, 2011 6:38 AM
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How do I get mathematica to consider a parameter in an integrand to be
real.

Example:
In[1]:Integrate[1/(Cos[x] Sqrt[Cos[x]2 - a2]), x]

ArcTanh[(Sqrt[2] Sqrt[-a2] Sin[x])/Sqrt[1 - 2 a2 + Cos[2 x]]]/Sqrt[-
a2]

But I want a2>0 (a real).







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