Question

what must be true for the numbers a and b for the interval [b-a,a-b] to exist? and if it exists, does it include the number 0?​

Answer 1

a - b > 0, Yes

Explanation:

for the interval to exist,

a - b > b - a

2a - 2b > 0

a > b

if a > b then

b - a < 0 and a - b > 0 Hence upper limit of the interval will be positive and lower limit will be negative.

Interval will include 0.

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