Mathematics
Senior High
この問題のような、x=-tと置く方法はどのような場合の時に使いますか??教えていただきたいです🙇🏻♀️🙇🏻♀️
V
そ2
(4) x=ーt とおくと, x- 18 のとき
したがって
lim (Vx?+x+1-Vxーx+1)
X→-8
=lim(V?-t+1ーVP 1)
t→8
=lim
V2-t+1+V?+t+1
T0 ash
-2t
=lim
1-0 Vt?-t+1 +V?+t+1
-2
=lim
t→0
1
11
mil
1
1+
t
=-1
mil-
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