Hi

I am helping out a friend at my dad's work with his maths (its part of his apprenticeship course). I've just finished doing A-Level maths myself, over a 12 month period.

The question i have is actually in the attachment. Parts 3 a) and b)

With this, i know that dy/dy of e^x is e^x, but not sure how to begin tackling this question, and is possibly above my level i'm not sure. Its for an engineering course so i don't think it was on my syllabus. Any beginning help for either question would be great

Thanks