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# Danny Van Elsen

Last seen: 1 year ago Active since 2019

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ode; zero input response; drawing the function in matlab
hello in the context of ordinary differential equations and system modelling, an example of how to determine the zero-input r...

2 years ago | 1 answer | 0

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Question

double integration of parametric function
hello all, I know how to plot a parametric surface, for example as in syms u v x = u * cos(v); y = u * sin(v); z = v; fsur...

3 years ago | 2 answers | 0

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Question

fsurf: interval from parameters
hello. when plotting this surface syms u v x = u; y = v; z = 4 - u^2 - v^2; %fsurf(x, y, z, [-4 4 -4 4]) fsurf(x, y, z) I...

3 years ago | 1 answer | 0

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Question

simplifying an algebraic expression in two variables
hello I know that sqrt ((x-1)^2 + (y-2)^2) + sqrt ((x+1)^2 + (y+2)^2) = 6 and 8*(x^2) - 4*x*y + 5*(y^2) = 36 are equiva...

3 years ago | 1 answer | 0

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Answered
plotting two parametric functions in same figure
ah, yes, I see. adding ylim([-10 10]) xlim([-10 10]) gives other results thanks for your patience there...

3 years ago | 0

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Question

plotting two parametric functions in same figure
I was trying to plot a parametric function, and its inverse, like this: t= linspace (-30, +30); x= t; y= (t.^5) + ...

3 years ago | 2 answers | 0

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