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melamori03 [73]
3 years ago
7

1/x - 1/(x+1) ≤ 0 Please help quickly

Mathematics
1 answer:
Ymorist [56]3 years ago
7 0
\frac{1}{x}- \frac{1}{x+1}= \frac{(x+1)-x}{x(x+1)}= \frac{1}{x(x+1)} \leq 0

Therefore x(x+1)≤0, and if two numbers multiply to a negative number, one of them has to be negative and the other has to be positive. In this case, because x+1>x, x≤0, and x+1≥0

Therefore -1≤x≤0, and x can take up the value of any real number in the interval [-1,0]
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