how to draw a directional field for this equation?

I am trying to plot directional field for these differential eq.s

a) y’= 0.1y-sin(y)

b) y’ = y^2-3*y+1

c) y’ = -y(y-2)(y-4)/10

I was trying to write it like this, but then I am not sure how to give x.

[x, y] = meshgrid(-2:0.2:3, -1:0.2:2);  
s = 1 - x.*y.^2;    
% for slope function 
% f = 1 - x y^2 
quiver(x,y, ones(size(s)),s), axis tight

[darova]

Everything is correct. What is the question?

[N/A]

It was a mathematical error. Figured it later. Thank you.

Answer 1

[KSSV]

You may have a look on this file exchange function which help you to plot the directional plot.

https://in.mathworks.com/matlabcentral/fileexchange/71408-dfield8

[N/A]

I was asked to write it like ive mentioed by my professor. But I will look into this function too.