develop a differential equation where x(t) = 6 is a solution function but x(t) = 8 is not a solution. explain why your differential equation meets both of these criteria
a. The differential equation (t)+x(t)=0
b. The differential equation (t)+3x(t)=0
c. The differential equation (t)−x(t)=0
d. The differential equation 2(t)−4x(t)=0