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# Quotient Rule help Watch

I've gotten a little stuck.
Here is the solution:
Spoiler:
Show

my working is as follows:
let and

and

thus using quotient rule:

Where do I go from here?
2. (Original post by purplefrog)

I've gotten a little stuck.
Here is the solution:
Spoiler:
Show

my working is as follows:
let and

and

thus using quotient rule:

Where do I go from here?
You made a small mistake with which way round the quotient rule goes. You should have got . Do that same simplification step you did before, then multiply top and bottom of the fraction by .
3. your numerator is the wrongway round .... Wherever v is it goest before the U..
can't really explain it but it should be Root(x+3)-(x/2root(x+3) and then divide by v^2

^^ ahh he explained it clearer then i ever could have
4. If you hate the quotient rule more than the product rule, then you could always just use the product rule. A question will never specifically ask you to use one method over the other.

For me, turning into and using the product (and chain) rule is simpler and faster than trying to remember the quotient rule.

Just an idea though. Use whatever you feel more comfortable with.
5. (Original post by purplefrog)
x
I'm going to start from scratch so it makes sense to me

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