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Evaluate:`int(secx)/(secx+tanx)dxdot` |
Answer» `int(secx)/(sec x +tan x)dx=int(secx(secx-tanx))/((secx+tanx)(secx-tanx))dx` `=int(sec^(2)x-secxtanx)/(sec^(2)x-tan^(2)x)dx` `=int sec^(2)xdx-intsecx tanx dx` `=tanx - secx +C` |
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