I understand the product rule and how to use it, but I've been told to prove it, and I don't really know how. Could I be helped with this?
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Shouldn't be too hard
Here's the start
can you take it from here?
I have understood what you have done using the calculus theorem, however I don't know what to do from were you have left it, usually the ' 's would cancel out,
Sorry, could you give more clues
There's only a couple of steps left to the proof, I don't want to spoil it completely!
here's a little bit more
Now factor out and in groups.
I may have got it I think,
but can be written as as h tends to zero
thus as h tends to zero
am I correct?
wahay, kinda guessed that,
thank you very much
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