Question $1$

Determine whether the equations are separable, linear, neither, or both.

a$.\frac{dx}{dt}-4xt=7e^x$

b$.5t=3e^t\frac{dy}{dt}+ylnt$

c$.5x\frac{dx}{dt}+6t^{2}x=4cost$

$$

d$.3r=\frac{dr}{dt}-6t^3$

$$