1.求x的实数范围满足log(4-x)+log(x+3)
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1.求x的实数范围满足log(4-x)+log(x+3)
![1.求x的实数范围满足log(4-x)+log(x+3)](/uploads/image/z/11553228-36-8.jpg?t=1.%E6%B1%82x%E7%9A%84%E5%AE%9E%E6%95%B0%E8%8C%83%E5%9B%B4%E6%BB%A1%E8%B6%B3log%284-x%29%2Blog%28x%2B3%29)
log函数底数为10时写作ln
ln(4-x)+log(x+3)=ln(4-x)(x+3)=ln(-x^2+x+12)
ln(4-x)+log(x+3)=ln(4-x)(x+3)=ln(-x^2+x+12)
1.求x的实数范围满足log(4-x)+log(x+3)
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