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OpenStudy (anonymous):
integrate x/ sqrt(a^2 - x^2 )
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hartnn (hartnn):
did you try to substitute a^2-x^2 = u then differentiat this to get dx....
OpenStudy (cwrw238):
du/dx = -2x dx = du/-2x now substitute u for a^2 - x^2 and du/-2x for dx
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