Why doesn't this matlab code work?!

>> x = -5:1:5;

>> y = exp(x)*(x.^3-5*x.^2+5*x+1);

Error using *

Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix

matches the number of rows in the second matrix. To perform elementwise multiplication, use '.*'.

Related documentation

>> plot(x,y)

Unrecognized function or variable 'y'.

thank you

Answer 1

[the cyclist]

You missed a spot where you needed an element-wise operation, multiplying the exp(x) by the other term:

x = -5:1:5;
y = exp(x).*(x.^3-5*x.^2+5*x+1);

[Aryo Aryanapour]

Thank you very much

it works now