How to solve x^4-p*x+q.solve for x considering p and q as constants

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jahanzaib shahzad
jahanzaib shahzad 2018-9-23
回答： Basil C. 2018-9-24
Solve for x taking p and q as conntants
  1 个评论
Dimitris Kalogiros
Dimitris Kalogiros 2018-9-23
I wonder whether your equation is
x^4-p*x^2+q =0
or if it is
x^2-p*x^2+q=0
Since, I thing that what you gave has no analytical solution if p,q are being considered as parameters.

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回答（2 个）

Bruno Luong
Bruno Luong 2018-9-23
roots([1,0,0,-p,q])
Basil C.
Basil C. 2018-9-24
Here is a better way to implement when you only have the equation given
syms x
%define the value of p and q
y=x^4-p*x+q;
C=double(coeffs(y,'All'));
answer=roots(C)

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