Mathematics
Senior High
Solved
なぜ、青い線のような式になるか教えてください🙏
2x
-dx
/x+1-x
V2.
2x
-dx とする。
x2+1-x
2x(/x+1+x)
-dx
=|2x+1 dx+2\dx
ここで, x°+1=t とおくと
2x dx=dt
よって ノ-VT +2/t'dx
ー23
t/t+x°+C
3
2
=(+1)+1+い+C
200nie 3
(50ni
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ありがとうございます!