matlab solver with respect to x^2

3 views (last 30 days)
Jinho Lee
Jinho Lee on 13 May 2022
Commented: Jinho Lee on 13 May 2022
I have some questions for matlab solve
If I have an equation like x^2+x^4=a and try to find solution, I could use matlab solve
My question is instead to solve x, is there any way to solve equation with respect to x^2...?
For example
equ1=x^2+x^4==a
S=solve(equ1,x^2)....?
another question is if I want to solve the above equation with a=1
How to use "solve"(S=solve(equ1, x,a==1) is not working properly...

Answers (1)

Chunru
Chunru on 13 May 2022
Edited: Chunru on 13 May 2022
syms x a y
equ1=x^2+x^4==a
equ1 = 
equ2 = subs(equ1, x^2, y)
equ2 = 
S=solve(equ1,x)
S = 
Sx2 =solve(equ2)
Sx2 = 
subs(Sx2, a, 1)
ans = 

Categories

Find more on Partial Differential Equation Toolbox in Help Center and File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!