90.9k views
4 votes
What is the solution set for the exponential inequality 1/(2²ˣ⁺¹) < 4?

User Yajo
by
8.9k points

1 Answer

5 votes

Final answer:

The solution set for the exponential inequality 1/(2²⁴⁺¹) < 4 is x > -3/2, which represents all numbers greater than -1.5.

Step-by-step explanation:

To solve the exponential inequality 1/(2²⁴⁺¹) < 4, we first need to rewrite the inequality in a more manageable form. To do this, we can express the number 4 as a power of 2 since this will allow us to compare the exponents directly. We know that 4 is equal to 2², and using this we can rewrite our inequality as:



1/(2²⁴⁺¹) < 2²



Now, we take the reciprocal of both sides, bearing in mind that this will reverse the inequality sign:



2²⁴⁺¹ > 1/2²



This simplifies to:



2²⁴⁺¹ > 2⁻²



Now we have the same base on both sides, which allows us to compare the exponents directly. This gives us the inequality:



2x+1 > -2



Subtracting 1 from both sides, we obtain:



2x > -3



Dividing both sides by 2, we arrive at the solution for the inequality:



x > -3/2



So the solution set for the inequality is x > -3/2, meaning that any number greater than -1.5 will satisfy the original exponential inequality.

User Redcalx
by
8.3k points