Mathematics
Undergraduate
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この問題の(2)と(3)がなぜこの答えになるのか分かりません。どなたか解説していただきたいです🙇♀️
問 4.16 次の方程式と不等式を解け.
(1) 2log₂ (x - 2) = log₂ (x + 4)
(3) 2log₂ (x − 2) < log₂ (2x − 1)
Let's TRY
(2) 2log₂ (2-x) ≥ log₂ x
,<log3 2 < logg 5
(4) x = 27 (5)
4.16 (1) x = 5
4.15 (1)
−2<x< 7 (6) *¤×²
(2) 0< x≤ 1 (3) 2<x<5
125
=(1/1)-1 =2 (2) x
=
4.5節 4.17 log10 (3) 20
-20 log10 3 = −20 × 0.4771
-10 <log10 (2) 20 < -9, すなわち 10-10 (12) 2010-9である.
X =
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なるほど！ありがとうございます！