質問


Need the backward trajectories of ode plot
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...

11年弱 前 | 1 件の回答 | 0

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質問


How to solve odes without using ode package rather using RK4 method.
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; ...

11年弱 前 | 0 件の回答 | 0

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質問


How to plot a BAR chart
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

11年弱 前 | 1 件の回答 | 0

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質問


solve an expression and plot
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...

11年弱 前 | 2 件の回答 | 0

2

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質問


Implicit function plot of function having discontinuity at origin.
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...

11年弱 前 | 2 件の回答 | 0

2

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質問


How to change color of x and y axis by red and blue
I want to change the color of each axis by red & blue? x=0:.1:1 axis([0 1 0 1]); y=x.*(1-x); plot(x,y,'g'); ...

11年弱 前 | 1 件の回答 | 0

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質問


How to color RED to the lower portion of the curve
How to color RED to the lower portion of the curve y=x^2 x = 1 : 0.1 : 10; y = x.^2; plot(x,y) axis([1 10 0 100])

約11年 前 | 1 件の回答 | 0

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質問


How to get the positive root of the cubic a*x^3+3*b*x^2+3*c*x+d=0
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...

約11年 前 | 3 件の回答 | 0

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質問


How to get tau for every c and plot a c vs tau graph
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...

約11年 前 | 1 件の回答 | 0

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質問


How to find only positive root of a polynomial
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...

約11年 前 | 1 件の回答 | 0

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質問


How to find a real positive root
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...

約11年 前 | 1 件の回答 | 0

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質問


How to find a real positive root of a bi-quadratic equation
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...

約11年 前 | 1 件の回答 | 0

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質問


How to plot a complicated function
How to plot a complicated equation -(r * x / K) + (alpha ^ 2 * (1 - c) ^ 2 * x * y / (1 + alpha * h * (1 - c) * x) ^ 2 * h)...

約11年 前 | 2 件の回答 | 0

2

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質問


How to draw x=2 line using plot command
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...

約11年 前 | 2 件の回答 | 0

2

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質問


Plot for two range of x
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...

約11年 前 | 2 件の回答 | 0

2

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質問


How to plot two complicated functions
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...

11年以上 前 | 1 件の回答 | 0

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質問


Plot for different value of a
x = [-2:0.1:2]; z=x.*(a-x^2); plot(x,z) I want to plot(x, z) for four values of a = .5, 1, 1.3, 1.95. How to ...

11年以上 前 | 1 件の回答 | 0

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質問


How to get z for different x
x = [-2:0.1:2]; z=x.*(1-x).*(2-x).*(4-x)/((6-x)-(1-x).*(x-7)); I am getting error. Please correct my problem.

11年以上 前 | 3 件の回答 | 0

3

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質問


3D plot with colored planes
I use plot3(x,y,z, 'b') box on for plotting a 3D system. I want the faces of xy-plane, yz-plane and zx-plane to be c...

11年以上 前 | 1 件の回答 | 0

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質問


How to connect the dots
I am plotting with plot(x,var(x),'o') var(x) is the variance. These points (x,var(x)) are the discrete points in a x-v...

12年弱 前 | 2 件の回答 | 0

2

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質問


Bifurcation Diagram
I want to draw the bifurcation diagram fro the model. dx/dt=rx(1-x/K)-mxy/(ax+by+c) dy/dt=emxy/(ax+by+c)-dy-hy^2. param...

12年以上 前 | 1 件の回答 | 0

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