Mathematics
Senior High
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(4)の下線部の式変形がわかりません。
教えてください🙇🏻‍♀️

x+1 (4) Vx+I=t とおくと 1 → 3 x x=t?-1, dx=2tdt t 2 → 2 3 dx 1 xVx+1 -S, at =f(ー = log 2 1 2 · 2tdt = 2 1 ldt t+1 VZ (2-1)t 1 V2 +1 V2 -1 12 t-1 =log( /2 3+2、2 = log 3

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