Mathematics
Senior High
青線のところがどうしてこうなるのかと、なぜyはそのままなのか教えて下さい🙏
問題8
1
(1) x+===y+
y
1
=1のとき, xyz の値を求めよ.
2
8
(1)x+1=1より
1_y-1
yy
x=1-
-
1
1-y
y+-
1+1/2=1 より z=
2
(
2-T₁ xyz =(4-¹). y .(-1²-y)=-1
よって ryz=
y-1
y
一
Answers
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