Mathematics
Primary
流れが分かりません．
詳しい解説が欲しいです．
2
y = 3x² + 7x + 1
[解]
v=3(x² + 3x)+1
2
7
49 49
3/(x²+3x+36) -36) +1
=
2
49
= 3(x + 7 )² - 12 + 1
6
7
37
= 3(x + 2)² - 32
6
12
よって1-16
7
37
12
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