Getting the same incorrect plot with exponential function

5 visualizaciones (últimos 30 días)
Mohamed Aziz Elouaer
Mohamed Aziz Elouaer el 11 de Oct. de 2021
Respondida: Walter Roberson el 11 de Oct. de 2021
I need to plot this function:
y= e^(2x)-3*e(x)
But matlab keeps showing me the incorrect plot, I mean the same incorrect one even if I change the function.

Respuestas (2)

Image Analyst
Image Analyst el 11 de Oct. de 2021
That is the correct plot for that equation. What were you expecting? Why do you say it's wrong?
x = linspace(0, 10, 1000);
y = exp(2 * x) - 3 * exp(x);
plot(x, y, 'b-', 'LineWidth', 2);
grid on;
xlabel('x', 'FontSize', 18)
ylabel('y', 'FontSize', 18)
And if I change the equation, the plot looks different.

Walter Roberson
Walter Roberson el 11 de Oct. de 2021
y = @(x) exp(2*x)-3*exp(x)
y = function_handle with value:
@(x)exp(2*x)-3*exp(x)
exp(2*10)
ans = 4.8517e+08
fplot(y, [-2 10])
Looks correct to me. You are asking to plot up to

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