How to solve Implicit plot in analitic equation

Dear Friends,

Let implicit equation

r/(1-r)^((c+1)/(c-1))=A*exp(-z/(c-1))

with z=x-c*t, A, c, t is known and x in the form of a matrix

let x = [-50:dx:50]

How to plot (x,r)?

Please help me. Thanks.

Answer 1

[Star Strider]

Try this:

syms A c r x z
A = sym(2);                                             % Substitute Correct Values
c = sym(3);                                             % Substitute Correct Values
t = sym(5);                                             % Substitute Correct Values

Eqn1 = r/(1-r)^((c+1)/(c-1)) == A*exp(-z/(c-1));
z = x-c*t;
r = simplify(solve(subs(Eqn1), r), 'steps',10);

figure(1)
fplot(r, [-50  50])

[Kasam Syaepduin]

Star Strider thanks for your answer but still error. How? ??? Error using ==> sym.simplify Too many input arguments.

Error in ==> Analitik_1C2 at 7 r = simplify(solve(subs(Eqn1), r), 'steps',10);

[Star Strider]

My pleasure.

I am using R2016a. It ran without error.

Break them out into separate lines to see where the problem is:

Eqn2 = subs(Eqn1);
r = solve(Eqn2, r);
r = simplify(r, 'steps',10);

You may not need the simplify call. I use it routinely to make the expressions easier to read.

Alternatively, try:

r = simplify(r);

[Kasam Syaepduin]

I am using R2010a

clear all;

clc;

syms A c r x z

A = sym(2);

c = sym(3);

t = sym(5);

z = x-c*t;

Eqn1 = r/(1-r)^((c+1)/(c-1)) == A*exp(-z/(c-1));

r = simplify(r);

fplot(r, [-50 50])

still error. Whether there are other alternatives?

[Star Strider]

If the error is in the simplify call, just delete it. The simplify call is not important to the code.