evaluating functions and plotting

22 visualizaciones (últimos 30 días)
sumaiya hossain
sumaiya hossain el 5 de Ag. de 2022
Comentada: sumaiya hossain el 5 de Ag. de 2022
evaluate and plot:
What I did for this question was I put each of the equations into a variable : eqn, eqn2 , eqn3 then from that I substituted the x values that apply to each equation and saved it as a , b , c. However I am unsure to how I would plot the graph into one as they are saved as 3 different variables.
First I assumed I would have to plot each graph separately but I am unsure if that is correct or not.
can I get some advice if plotting 3 different graphs for each variable is reasonable or there is another approach I should take.
syms x
eqn = 2*x^2
eqn = 
a = subs(eqn,x,(0<x)&(1>=x));
eqn2 = x^2 + 3
eqn2 = 
b = subs(eqn2,x,(1<x)&(3>=x))
b = 
eqn3 = -3*x
eqn3 = 
c = subs(eqn3,x,(3<x)&(5>=x))
c = 

Respuesta aceptada

Torsten
Torsten el 5 de Ag. de 2022
Use "piecewise" if you want to work with symbolic variables and functions.
Otherwise
f = @(x)2*x.^2.*(x>0 &x<=1) + (x.^2+3).*(x>1&x<=3) + (-3*x).*(x>3&x<=5);
x = 0:0.01:5;
plot(x,f(x))
  1 comentario
sumaiya hossain
sumaiya hossain el 5 de Ag. de 2022
Thank you! Yes i was unsure if you could actully plot it together, I understand now. :)

Iniciar sesión para comentar.

Más respuestas (0)

Categorías

Más información sobre 2-D and 3-D Plots en Help Center y File Exchange.

Productos


Versión

R2022a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by