How to Find Values of k for Equations with One Real Root?

  • MHB
  • Thread starter mathdad
  • Start date
In summary, the variable "k" is commonly used to represent an unknown value or constant in mathematical equations. To find the values of "k" in an equation, one must solve the equation for "k" using various mathematical techniques. "k" has many applications in scientific fields such as physics, chemistry, and mathematics. Strategies for finding values of "k" may include simplifying the equation, using substitution, or using numerical methods. It is important to find the values of "k" in equations in order to fully understand and accurately model the behavior of the system or phenomenon described by the equation, as well as make meaningful comparisons and draw conclusions from data.
  • #1
mathdad
1,283
1
Find values of k such that the equation has exactly one real root.

1. 3x^2 + (sqrt{2k})x + 6 = 0

2. kx^2 + kx + 1 = 0

Question:

Do the questions above involve the discriminant?

If so, I must apply b^2 - 4ac = 0, right?
 
Mathematics news on Phys.org
  • #2
RTCNTC said:
Find values of k such that the equation has exactly one real root.

1. 3x^2 + (sqrt{2k})x + 6 = 0

2. kx^2 + kx + 1 = 0

Question:

Do the questions above involve the discriminant?

If so, I must apply b^2 - 4ac = 0, right?

Yes . you can solve with discriminant and you must apply $b^2-4ac=0$
 
  • #3
Not too bad.
 

Related to How to Find Values of k for Equations with One Real Root?

What is the meaning of "k" in the context of finding values?

The variable "k" is used to represent an unknown value or constant in mathematical equations, such as finding the roots of a quadratic equation. It can also represent a coefficient in a linear equation or a rate constant in a chemical reaction. The specific meaning of "k" will depend on the problem being solved.

How do you find the values of "k" in an equation?

To find the values of "k" in an equation, you will need to solve the equation for "k". This may involve manipulating the equation algebraically, using substitution, or using other mathematical techniques depending on the type of equation. Once you have solved for "k", you can plug in the given values of the other variables to find the specific value of "k".

What are some common applications of finding values of "k"?

Finding values of "k" is a common task in many scientific fields, including physics, chemistry, and mathematics. For example, in physics, "k" may represent a spring constant or gravitational constant. In chemistry, "k" can represent a rate constant in a chemical reaction. In mathematics, "k" may be used to represent a coefficient in a polynomial equation.

What are some strategies for finding values of "k" in equations?

One common strategy for finding values of "k" is to start by simplifying the equation and then using substitution to solve for "k". Another strategy is to graph the equation and use the graph to estimate the value of "k". Additionally, in some cases, you may need to use trial and error or numerical methods to find the value of "k" that satisfies the given equation.

Why is it important to find the values of "k" in equations?

Finding the values of "k" is important because it allows us to fully understand and solve the given equation. Without knowing the value of "k", we may not be able to accurately predict or model the behavior of the system or phenomenon described by the equation. In scientific research, finding the values of "k" can also help us make meaningful comparisons and draw conclusions from our data.

Similar threads

  • General Math
Replies
3
Views
1K
Replies
19
Views
2K
Replies
1
Views
782
Replies
1
Views
913
Replies
14
Views
1K
Replies
4
Views
983
Replies
2
Views
783
Replies
4
Views
994
  • General Math
Replies
7
Views
2K
  • General Math
Replies
4
Views
1K
Back
Top