how to get function value at any input, after solving Differential eq. using dsolve

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Muhammad Asad 2024-2-3

评论： Dyuman Joshi 2024-2-3

Solution to below diff . eq. using dsolve command is:

Z= dsolve('Dy=1+t.^2','y(1)=-4');

Z=(t*(t^2 + 3))/3 - 16/3

Now how to write code to get the value of Z at t = 2

Torsten 2024-2-3

syms t y(t)

Z= dsolve(diff(y,t)==1+t^2,y(1)==-4)

Z =

Z_at_2 = subs(Z,t,2)

Z_at_2 =

Z_at_2_numeric = double(Z_at_2)

Z_at_2_numeric = -0.6667

fplot(Z,[-2 2])

grid on

Muhammad Asad 2024-2-3

Great, Many thanks

Dyuman Joshi 2024-2-3

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