Mathematics
Senior High
Resolved
紫色で囲ったところがなぜ、そうなるのか分からないので教えてください🙏
2x
-dx
/x+1-x
2x(/x+1+x)
I=\-
dx
2
=2x/+1 dx+2\xdx
ここで, x°+1=t とおくと
2x dx=dt|
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ありがとうございます!