Problem

3x2<x

Answer

Expert–verified
Hide Steps
Answer

However, we must consider the domain we found earlier, 23x<1. Taking the intersection with the inequality x<1, we get the final solution as x[23,1).

Steps

Step 1 :First, we need to ensure that both sides of the inequality are defined and non-negative. Since the square root is always non-negative, we need to find the domain of the square root function: 3x20, which gives us x23.

Step 2 :Now, we need to find the domain of the inequality x>3x2. Solving for x, we get 2x<2, which gives us x<1.

Step 3 :Taking the intersection of the domains, we get 23x<1.

Step 4 :Since both sides are non-negative (and defined) for 23x<1, we can square both sides, to obtain the equivalent inequality 3x2<x2.

Step 5 :This simplifies to x23x+2>0, which factors as (x1)(x2)>0.

Step 6 :From the factored inequality, we can see that the inequality is satisfied when either both factors are positive (x>2) or both factors are negative (x<1).

Step 7 :However, we must consider the domain we found earlier, 23x<1. Taking the intersection with the inequality x<1, we get the final solution as x[23,1).

link_gpt