1.4 ʬ

1.11 (ʬ)  

$\displaystyle (3x-4y+3)y'+6x+3y+5=0$    

typing...

1.12 (ʬ)  

$\displaystyle (2x-2y-1)y'+2x+2y+1=0$    

typing...

1.13 (ʬ)   ʬҤᡤ

$\displaystyle (xy-x^2)y'+1-xy=0$    

typing...

1.14 (ʬ)   ʬҤᡤ

$\displaystyle y'\cos y+\sin y=0$    

typing...




ʿ19ǯ49