Browse · MATH
Printjmc
algebra senior
Problem
Find the interval of all such that both and are in the interval .
Solution
If , then, dividing all the expressions in these inequalities by , we have .
If , then, dividing all the expressions by , we have .
Given that satisfies both inequalities, we must have . In interval notation, the set of common solutions is .
If , then, dividing all the expressions by , we have .
Given that satisfies both inequalities, we must have . In interval notation, the set of common solutions is .
Final answer
\left(\frac{1}{2},\frac{2}{3}\right)