Find the solution of f(x)=x^3+4x- 6=0

  • MHB
  • Thread starter albert391212
  • Start date
In summary, the equation "f(x)=x^3+4x-6=0" is a polynomial equation with a degree of 3 and has 3 solutions. The solutions can be found using various algebraic methods such as factoring and the quadratic formula, and can be real, imaginary, or complex. Real solutions are values of x that satisfy the equation, while imaginary and complex solutions involve the use of imaginary numbers.
  • #1
albert391212
11
0
Please find the solution of polynomial function :
\(\displaystyle f(x)=x^3+4x- 6=0\)
I use Newton's method to solve it
and I also write a program (using excel) for help
 
Technology news on Phys.org
  • #2
1650694997076.png
 
  • #3
Albert391212 said:
https://www.physicsforums.com/attachments/11796
sorry I mistype the function in my program
I tried again using the correct function and put seed 1 , and get the answer x=1.1347
there is only one solution
x=1.1347
1650710371666.png
 
  • #4
That's the correct solution. What is your question?

-Dan
 

FAQ: Find the solution of f(x)=x^3+4x- 6=0

1. What is the meaning of the equation f(x)=x^3+4x- 6=0?

The equation f(x)=x^3+4x- 6=0 represents a mathematical function where the output (f(x)) is equal to the input (x) cubed, plus four times the input, minus six. The equation is set equal to zero in order to find the points where the function crosses the x-axis, also known as the roots or solutions.

2. Why is it important to find the solution of f(x)=x^3+4x- 6=0?

Finding the solution of f(x)=x^3+4x- 6=0 is important because it allows us to determine the x-values where the function crosses the x-axis, which can provide valuable information about the behavior of the function. Additionally, finding the solutions can help us solve real-world problems that involve cubic functions.

3. How do you find the solution of f(x)=x^3+4x- 6=0?

To find the solution of f(x)=x^3+4x- 6=0, we need to solve for x by manipulating the equation. This can be done algebraically by factoring or using the cubic formula, or graphically by plotting the function and identifying the x-intercepts. Depending on the complexity of the function, there may be multiple solutions.

4. What are the key concepts needed to solve f(x)=x^3+4x- 6=0?

In order to solve f(x)=x^3+4x- 6=0, one must have a strong understanding of algebraic manipulation, including factoring and solving equations. It is also important to understand the properties and behavior of cubic functions, such as the number of solutions and how they intersect the x-axis.

5. Can the solution of f(x)=x^3+4x- 6=0 be found without using algebraic methods?

Yes, the solution of f(x)=x^3+4x- 6=0 can be found without using algebraic methods by graphing the function and identifying the x-intercepts. However, this method may not be as precise as algebraic methods and may only provide an estimate of the solutions. Additionally, for more complex functions, it may be difficult to accurately determine the solutions graphically.

Similar threads

Back
Top