Podcast
Questions and Answers
For an exponential function where 𝑏 > 1, if 𝑥1 > 𝑥2, what can be said about 𝑏?
For an exponential function where 𝑏 > 1, if 𝑥1 > 𝑥2, what can be said about 𝑏?
- 𝑏 < 1
- 𝑏 = 0
- 𝑏 = 1
- 𝑏 > 1 (correct)
What is the key to solving exponential inequalities?
What is the key to solving exponential inequalities?
- The value of the base
- The value of 𝑥2
- The direction of the inequality (correct)
- The value of 𝑥1
What is the solution set for the inequality 2𝑥+9 ≤ 4𝑥+1?
What is the solution set for the inequality 2𝑥+9 ≤ 4𝑥+1?
- Solutions in the range (−∞, 2] (correct)
- Solutions in the range [1, +∞)
- Solutions in the range [−∞, −12)
- Solutions in the range (−∞, −1)
What is the solution set for the inequality (0.5)1/343 𝑥−5 ≤ 3(𝑥+8)?
What is the solution set for the inequality (0.5)1/343 𝑥−5 ≤ 3(𝑥+8)?
What is the solution set for the inequality 3𝑥 > (0.25) −𝑥−2?
What is the solution set for the inequality 3𝑥 > (0.25) −𝑥−2?
What is the solution set for the inequality 125 / (2𝑥+8) ≤ 512 / (𝑥+5)?
What is the solution set for the inequality 125 / (2𝑥+8) ≤ 512 / (𝑥+5)?
Study Notes
Exponential Function Properties
- For an exponential function with base b greater than 1, if x1 is greater than x2, then b^x1 will be greater than b^x2.
Solving Exponential Inequalities
- The key to solving exponential inequalities lies in understanding the behavior of exponential functions with respect to their base.
- If the base is greater than 1, the function increases as the exponent increases.
- If the base is between 0 and 1, the function decreases as the exponent increases.
Solving Linear Inequalities
- The solution set for the inequality 2x + 9 ≤ 4x + 1 is x ≥ 4.
- To solve, isolate x on one side of the inequality.
Solving Exponential Inequalities with Fractional Bases
- The solution set for the inequality (0.5)^1/343 (x - 5) ≤ 3(x + 8) is x ≥ -2.94.
- Simplify the fractional base by converting it to a power of 1/2.
- Isolate x on one side of the inequality and remember to flip the inequality sign if multiplying or dividing both sides by a negative number.
Solving Exponential Inequalities with Fractional Exponents
- The solution set for the inequality 3x > (0.25)^-x-2 is x > -2.
- Rewrite 0.25 as 1/4 and express the power as a positive exponent.
- Isolate x on one side of the inequality and remember to flip the inequality sign if multiplying or dividing both sides by a negative number.
Solving Rational Inequalities
- The solution set for the inequality 125 / (2x + 8) ≤ 512 / (x + 5) is x < -5 or -5<x<11/2.
- Subtract the right side of the inequality from the left side and simplify to a single fraction.
- Find the values of x that make the numerator or denominator equal to zero.
- Test each interval to determine if the inequality holds true.
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Description
Test your understanding of solving exponential inequalities with this quiz. Practice solving inequalities involving exponential functions and different bases.