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Category: Integration

sen-2-cos-4-2-d-

Question Number 141362 by cesarL last updated on 17/May/21 sen(2θ)cos4(2θ)dθ Answered by bemath last updated on 17/May/21 cos4(2θ)sin(2θ)dθ=$$−\frac{\mathrm{1}}{\mathrm{2}}\int\:\mathrm{cos}\:^{\mathrm{4}} \left(\mathrm{2}\theta\right)\:{d}\left(\mathrm{cos}\:\mathrm{2}\theta\right)\:=…

a-a-sin-x-cos-x-dx-

Question Number 10241 by FilupSmith last updated on 31/Jan/17 aa+δsin(x)cos(x+δ)dx=??? Commented by prakash jain last updated on 31/Jan/17 sin(x)cos(x+δ)=sin(x+δδ)cos(x+δ)$$=\frac{\mathrm{sin}\:\left({x}+\delta\right)\mathrm{cos}\:\delta−\mathrm{cos}\:\left({x}+\delta\right)\mathrm{sin}\:\delta}{\mathrm{cos}\:\left({x}+\delta\right)}…