Top 5% contributor
x = [-2:0.1:2];
I am getting error. Please correct my problem.
Asked 3 years ago
du/dt=((1 − u)(u −M)(u^2 + A)−v)u dv/dt= B(u−C(u^2 + A))v I have to draw "The u-v zero-growth isoclines...
5 years ago
Suppose, for each alpha, I have to find a delta which is the highest positive root of the equation A^2-4*B*beta=0. The expressi...
Asked 2 years ago
How to plot a complicated equation
-(r * x / K) + (alpha ^ 2 * (1 - c) ^ 2 * x * y / (1 + alpha * h * (1 - c) * x) ^ 2 * h)...
I want to draw the vertical line x=2. I want to draw it by using plot command in x-y plane, x-is the horizontal axis. How to dra...
I have two ranges of x = [0:0.01:1] and x = [2:0.01:3] and I want to plot x vs. Y in one plot for the two rages of x values with...
How to plot a BAR chart with the following data
X: 28-30 22-27 13-21 8-12 4-7
Y: 3 16 70 8 3
I want to change the color of each axis by red & blue?
axis([0 1 0 1]);
How to color RED to the lower portion of the curve y=x^2
x = 1 : 0.1 : 10;
y = x.^2;
axis([1 10 0 100])
How to get the positive root of the cubic a*x^3+3*b*x^2+3*c*x+d=0 where a=1,c=b+2, d=-3 and b=.1:.1:2.
If rr is the root, fi...
How to get tau for every c from the equation "tau=acos(((omega^2*(D1-A*B)-C*D1)/(B^2*omega^2+D1^2))/omega)" where A, B, C, D1, o...
How to find only positive root of a polynomial equation x^4+7*x^2-A=0 where A is varying from 1:.1:3. If rr is the positive real...
How to find only the positive root of the equation x^3-A=0 for each A where A is a parameter varying like 1,2,3,....1000.
I have two complicated functions y^7-y^3-sin(x)+a*sqrt(x)=0 and e^(-x)+b*cos(y)-c*x^2+y^2=0 where a, b,c are given by 4, 3, 2. I...
x = [-2:0.1:2];
I want to plot(x, z) for four values of a = .5, 1, 1.3, 1.95. How to ...
I want to draw the bifurcation diagram fro the model.
Asked 4 years ago
I want to get the isocline surface of the 3D system of differential equations dx/dt=r*(1-(x+y)/K)*x-lambda*x*y-theta1*x*z/(a+x);...
I have a implicit function to be plotted which is (1-x)-a*x.*y./(x.^2+b*y.^2) where a =.1; b=.001;. Note that there is a discont...
I am plotting with
var(x) is the variance. These points (x,var(x)) are the discrete points in a x-v...
I have a system of differential equations which I can solve by Euler's method. The following code gives a plot of a trajectory t...
Suppose a bi-quadratic equation x^4+4*x^2-7=0. How to find a positive real root of it.
solve(x^4+4*x^2-7=0, x, Real, Positi...
for plotting a 3D system. I want the faces of xy-plane, yz-plane and zx-plane to be c...
How to solve system of ODES without using Ode package rather using RK4 method and plot(t,y1,t, y2,t, y3).
dy1/dx = 3*y1+y2;
dx/dt=rx(1-x/k)-alpha(1-c)xy/(1+alpha(1-c)hx) dy/dt=θ*alpha*(1-c)x(t-tau)y(t-tau)/(1+alpha(1-c)hx(t-tau))-dy for the param...
4 years ago