Error using / Arguments must be numeric, char, or logical.

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When i input this code :
t=0:1:10;
y=2.718.^(-t/5)-{[2.718.^(-t/5)].*t}/5;
plot(t,y(t))
the program reclaims : Error using /
Arguments must be numeric, char, or logical.
How can i solve this please ?

Risposte (2)

VBBV
VBBV il 22 Mag 2022
Modificato: VBBV il 22 Mag 2022
y=@(t) 2.718.^(-t/5)-(2.718.^(-t/5).*t)/5;
t=0:1:10;
plot(t,y(t))
Define the equation as anonymous function and plot

Image Analyst
Image Analyst il 22 Mag 2022
You can get rid of the (t) in plot. Also get rid of the braces in the definition of y because that puts what's inside of the braces into a cell and you can't subtract a cell from a number. See the FAQ:
You can also use exp instead of raising 2.718 to a power. Fixed code:
t = 0 : 10;
y = exp(-t/5) - exp(-t/5) .* t / 5;
plot(t, y, 'b-');
grid on;
xlabel('t');
ylabel('y');

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