So we want the general solution of:Originally Posted byNatasha1

]

Which id a first order ODE of variables separable type, ie:

,

which we know has solution:

so:

.

The integral on the LHS can be done using partial fractions.

(I am now being called away for dinner (evening meal) and will continue this

if need be after I have eaten, and stuffed the washing up in the dishwasher,

and cleared away my share of the children's mess )

RonL