AQA FP3 Differential equations using substitution

Hi I'm on this question (see word doc below) and here are my workings. I've labelled each line with a letter so when you spot where I'm going wrong you could just direct me to that line, if that makes things easier for you.

Thanks

Original post by maggiehodgson

Hi I'm on this question (see word doc below) and here are my workings. I've labelled each line with a letter so when you spot where I'm going wrong you could just direct me to that line, if that makes things easier for you.

Thanks

Line e. On the RHS you're differentiating wrt x, not t, so you'll need the chain rule as well as the product rule.

Is that sufficient for you to sort it out?

(edited 9 years ago)

Reply 2

TenOfThem

18

Original post by maggiehodgson

Hi I'm on this question (see word doc below) and here are my workings. I've labelled each line with a letter so when you spot where I'm going wrong you could just direct me to that line, if that makes things easier for you.

Thanks