Mathematics
Senior High
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線を引いた部分が分かりません
解説お願いします
合 logs(2x +4) - logs/3x-4 = logs 2
2
2x+4>0 かつ 13x-4>0
4
x>
3
の
よって
1
- logs (3x-4) であるから,与式は
2
logs V3x-4 =
1
1
- log, (2x + 4) - logs (3x-4) = 1log,2
2
2
logs (2x +4)-logs (3x-4) =D 2logs2
log-(2r+ - log (3r
02
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