Our first thought is that this is not in the tables so could we write it as a sum of simpler terms that might be in the tables… PARTIAL FRACTIONS.

First thing to do is factorise the denominator.

.

This is two Rule Is so we may use the Cover Up Method:

.

Now we apply the Inverse Transform to find

.

Regards,

J.P.

Was just wondering about Q. 8 (j) on page 121; I’m a bit stuck. If you could help us that would be great.

Thanks.

]]>Part (iii) is perfect.

With part (iv) is correct and you are good down to

.

After this (and with the other questions), you made some silly mistakes… you must have been tired.

You need to add to both sides to get

. Now divide both sides by four to get

.

For part (v) you are correct down to

.

It is not so you should have

.

Similarly for you should get down to . You got correct.

Part (vi) is perfect so far.

Regards,

J.P.

]]>I’m just wondering if I’m going down the right road with the first three parts of questions i have send you (iii),(iv),(v).

I am stuck on the (vi) one; I know you’re under pressure , so no panic if you don’t get back to me tomorrow.

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