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No Plagiarism!B5Zxr4prPxmZ0HKynlpzposted on PENANA 恐懼感8964 copyright protection546PENANAl8uxYRDJUC 維尼
550Please respect copyright.PENANAPUjLrdngW9
8964 copyright protection546PENANAct1eJJyerk 維尼
∫sin(√x+a)e√x√xdx8964 copyright protection546PENANAS4FRC23Twx 維尼
Substitute u=√x ⟶ dudx=12√x (steps) ⟶ dx=2√xdu:8964 copyright protection546PENANAuy5u4KWfDO 維尼
=2∫eusin(u+a)du… or choose an alternative:550Please respect copyright.PENANA2X1ImIofbS
Substitute e√x8964 copyright protection546PENANAIZx4nirnNp 維尼
Now solving:8964 copyright protection546PENANAS182hLRSVi 維尼
∫eusin(u+a)du8964 copyright protection546PENANAuorPMKN6ZW 維尼
We will integrate by parts twice in a row: ∫fg′=fg−∫f′g.8964 copyright protection546PENANAXGfxAlD1iB 維尼
First time:8964 copyright protection546PENANAiLg5ygyoXh 維尼
f=sin(u+a),g′=eu8964 copyright protection546PENANA3kFItXSLoO 維尼
↓ steps↓ steps8964 copyright protection546PENANAJJh0wxfleY 維尼
f′=cos(u+a),g=eu:8964 copyright protection546PENANA3vAdTe6HtW 維尼
=eusin(u+a)−∫eucos(u+a)du8964 copyright protection546PENANAqWNDUSTKU3 維尼
Second time:8964 copyright protection546PENANANjQEzm3jGE 維尼
f=cos(u+a),g′=eu8964 copyright protection546PENANA6E3n886PkY 維尼
↓ steps↓ steps8964 copyright protection546PENANAhx32pxurVa 維尼
f′=−sin(u+a),g=eu:8964 copyright protection546PENANA89Rnxfh2La 維尼
=eusin(u+a)−(eucos(u+a)−∫−eusin(u+a)du)8964 copyright protection546PENANAsXzQL03R7v 維尼
Apply linearity:8964 copyright protection546PENANAhsGZWvVJ3i 維尼
=eusin(u+a)−(eucos(u+a)+∫eusin(u+a)du)8964 copyright protection546PENANAJsM6ksHIFW 維尼
The integral ∫eusin(u+a)du appears again on the right side of the equation, we can solve for it:8964 copyright protection546PENANAdXWs3rd2Bn 維尼
=eusin(u+a)−eucos(u+a)28964 copyright protection546PENANAyvYfGShVqU 維尼
Plug in solved integrals:8964 copyright protection546PENANApZEkZSPrhE 維尼
2∫eusin(u+a)du=eusin(u+a)−eucos(u+a)8964 copyright protection546PENANAPDmV53v7uV 維尼
Undo substitution u=√x:8964 copyright protection546PENANAVlIM4nKjpz 維尼
=sin(√x+a)e√x−cos(√x+a)e√x8964 copyright protection546PENANAyiHY7l2OzJ 維尼
The problem is solved:8964 copyright protection546PENANAqoJoCkbI4I 維尼
∫sin(√x+a)e√x√xdx=sin(√x+a)e√x−cos(√x+a)e√x+C8964 copyright protection546PENANAOkruEfGZHj 維尼
Rewrite/simplify:8964 copyright protection546PENANAivZpDeX5Pr 維尼
=(sin(√x+a)−cos(√x+a))e√x+C8964 copyright protection546PENANA7sXCb1l29A 維尼
216.73.216.3
ns216.73.216.3da2