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Question Number 183844 by Michaelfaraday last updated on 30/Dec/22
Answered by MJS_new last updated on 31/Dec/22
∫dx2x−1+x−3==∫2x−1−x−3(2x−1+x−3)(2x−1−x−3)dx==∫2x−1x+2dx−∫x−3x+2dx=withu=2x−1andv=x−3it′seasytoget=22x−1−25arctan2x−15−2x−3+25arctanx−35+C
∫dx4cos2x−5sin2x=∫dx4−9sin2x=[t=tanx→dx=dtt2+1]=∫dt4−5t2=520ln5t+25t−1==520ln∣5sinx+2cosx5sinx−2cosx∣+C
Commented by Michaelfaraday last updated on 31/Dec/22
thankssir
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