StudyGPT Just Leveled Up – Say Hello to Knowee! 🚀
Knowee
Questions
Features
Study Tools

The values of k that satisfies the inequation (k-12) ≥ k2-9k + 12 are in the range [a, b]. Then find the values of a and b,

Question

The values of k that satisfies the inequation

(k12)k29k+12(k-12) \geq k^2 - 9k + 12
are in the range [a,b][a, b]. Then find the values of a and b.

🧐 Not the exact question you are looking for?Go ask a question

Solution

To solve this inequality, we first need to rearrange the terms to one side of the inequality. This gives us:

k^2 - 10k + 12 ≤ 0

This is a quadratic inequality. To solve it, we first need to find the roots of the corresponding quadratic equation, which are the values of k for which:

k^2 - 10k + 12 = 0

This can be factored to:

(k - 2)(k - 6) = 0

Setting each factor equal to zero gives the roots k = 2 and k = 6.

The quadratic inequality will change sign at each of these roots. To determine the sign in each interval, we can test a value in each interval in the inequality.

For k < 2, we can test k = 0. Substituting k = 0 into the inequality gives 12 ≤ 0, which is false. So the inequality is not satisfied for k < 2.

For 2 ≤ k ≤ 6, we can test k = 4. Substituting k = 4 into the inequality gives 4 ≤ 0, which is also false. So the inequality is not satisfied for 2 ≤ k ≤ 6.

For k > 6, we can test k = 7. Substituting k = 7 into the inequality gives -1 ≤ 0, which is true. So the inequality is satisfied for k > 6.

Therefore, the values of k that satisfy the inequality are in the range (-∞, 2) and (6, ∞). So, a = -∞ and b = ∞.

This problem has been solved

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.