How do you integrate the following questions?

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SUMMARY

This discussion focuses on integrating three specific mathematical expressions using various techniques. The first integral, x/((3-x^4)^(1/2))*dx, can be approached by substituting x^2 = √3 sin θ. The second integral, (1+e^x)/(1-e^x)*dx, simplifies to 1 + (2e^x)/(1-e^x) dx after division. The third integral, (xlnx)/((x^2-1)^(1/2))*dx, requires the application of integration by parts for resolution.

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How do you integrate the following questions?

1) x/((3-x^4)^(1/2))*dx

2) (1+e^x)/(1-e^x)*dx

3) (xlnx)/((x^2-1)^(1/2))*dx

thank you so much!
 
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1. Set [tex]x^{2} = \sqrt{3}\sin \theta[/tex]2. Divide it and get [tex]\int 1 + \frac{2e^{x}}{1-e^{x}} dx[/tex]
3. Use integration by parts.
 
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