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Brenda Galabe


Last seen: mer än 3 år ago |  Active since 2018

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finding laplace transform of heaviside function
trying to get lapace and plot : θ” + 2θ′ + 6θ = [H(t) − H(t − 1)], θ(0) = 4, θ′ (0) = 5, H is the Heaviside function ...

mer än 5 år ago | 1 answer | 0

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Question


keep getting error when trying to take Laplace transform
trying to find laplace for homogenous equation : cI′′ + dI′ + I/e = 0 syms D2I DI I gensoln deq t s deq = 'c*D2I + d*DI + (1...

mer än 5 år ago | 1 answer | 0

1

answer

Question


finding general solution of differential equation
the general solution (involving constants of integration C1, C2. so far i have eigen values and vectors. need to get general so...

mer än 5 år ago | 0 answers | 0

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looking for value of existense differential equation
Consider the differential equation x ′ = x cos(at) . For what values of (t, x) can solutions not be guaranteed? how do i find th...

mer än 5 år ago | 1 answer | 0

1

answer

Question


how to lapace results
how to plot this please deqdiff = 'diff(y(t),t,t) + y(t) - cos(t)' ldeqdiff = laplace(deqdiff,t,s) sldeqdiff = subs(ldeqdi...

mer än 5 år ago | 1 answer | 0

1

answer

Question


solve differential equation by method of undetermined coefficient
so given three differential equations to solve undetermined coefficient given initial solutions. not sure how to add initial con...

mer än 5 år ago | 1 answer | 1

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answer

Answered
ezplot is plotting a blank plot
this error happens instead Index exceeds matrix dimensions. Error in fplot (line 56) lims = args{2};

mer än 5 år ago | 0

Question


ezplot is plotting a blank plot
no errors nut plot is blank syms y(x) a=2; b=6; c=1; d= 8; e = 6; ode = diff(y,x) == (-d*x)/(e*y); ysol = vpa(dsolve(od...

mer än 5 år ago | 3 answers | 0

3

answers

Question


draw orthogonal trajectories using matlab
equation is dy/dx = -d*x/e*y syms y(x) a=2; b=3; c=5; d= 5; e = 8; ode = diff(y,x) == (-d*x)/(e*y); ysol = vpa(dsolve...

mer än 5 år ago | 0 answers | 0

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Question


draw orthogonal trajectories of differential equation
equation is dy/dx = -d*x/e*y syms y(x) a=2; b=3; c=5; d= 5; e = 8; ode = diff(y,x) == (-d*x)/(e*y); ysol = vpa(dsolve...

mer än 5 år ago | 0 answers | 0

0

answers

Answered
draw othorgonal trajectories using differential equations
thats for the first one correct ? do the same for the second. it worked great thanks also when i get this error what does it...

mer än 5 år ago | 0

Question


draw othorgonal trajectories using differential equations
to draw orthogonal trajectories am i suppose to use dfield or is ezplot as shown below on the right track Using the Matlab dra...

mer än 5 år ago | 2 answers | 0

2

answers

Answered
solving a linear ODE
not sure what that means

mer än 5 år ago | 0

Question


using dsolve to equation
equation is : d(x1)/dt (t) = -x1(t)*alpha+p syms x1 t tank1 = 'diff (x1,t)= - x1* alpha + p' soln1 = dsolve(tank1,'x1(0) = ...

mer än 5 år ago | 2 answers | 0

2

answers

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solving a linear ODE
how to write in matlab y = e^ int(75/80)dt

mer än 5 år ago | 2 answers | 0

2

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trying to get general solution for differential equation but keep getting error
syms dx1 gensoln eq1 eq1='dx1-x2/2+20' ; gensoln = dsolve(eq1,'t');

mer än 5 år ago | 1 answer | 0

1

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Question


Undefined function 'int' for input arguments of type 'char'. keep getting error using matlab2015b
eqa= 'diff(y(t),t)+y(t)-cos(t)'; neweq1a = laplace(eqa,t,s) neweq1i = laplace(int('y(x)','x','0','t'),t,s) neweq1 = neweq1a +...

mer än 5 år ago | 2 answers | 0

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answers