Plotting with a for loop

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German Bravo 2020-5-7

评论： Rik 2020-5-9

I am trying to plot this equation with for loop for x values between -3 and 6; y = x^4 - 4*x^3 - 6*x^2 + 15.

I am including the code and the plot that I get, why is my plot looking like this and how can I fix it?

for i = 1:10
    
    x(i)= i-4;
    y(i) = (i-4)^4 - 4*(i-4)^3 - 6*(i-4)^2 + 15;
    
   
end
plot(x,y)

Isiah Pham 2020-5-8

At the beginning of every script you should always put "clear;close;clc" to get rid of variables and such when you run things.

If you add more points your graph would also look smoother and more like the equation.

Rik 2020-5-9

You should not use them as a habit. During debugging it is a good idea (especially clear), but you should always keep thinking.

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