syms x
eq=-114.4.*(exp(-2.006.*x)-exp(-0.1855.*x))-20;
X=solve(eq,x)
ezplot(eq,[-0.5 0.5])
hold on
plot(X,subs(eq,X),'r*')
syms x
eq=-114.4.*(exp(-2.006.*x)-exp(-0.1855.*x))-20;
X=solve(eq,x)
ezplot(eq,[-0.5 0.5])
hold on
plot(X,subs(eq,X),'r*')