[Blindmath] Dirivitives

[Jacques Chappell]

Oh wow thank you i didnt notice that

Sent from my iPhone

> On Oct 18, 2014, at 11:43 AM, Alastair Irving via Blindmath <blindmath at nfbnet.org> wrote:
> 
> Hi
> 
> There's a mistake in your first line, in the first part of it you seem to have forgotten to differentiate sqrt t, to get t^(-1/2)/2.
> 
> When writing things like this you need to use more brackets, for example you should write
> 
> p(t)=sqrt t/(t-1)
> 
> 
> 
> HTH
> 
> Alastair
> 
> 
> 
>> On 18/10/2014 14:19, Jacques Chappell via Blindmath wrote:
>> I have a problem I have pasted into this email below, using the quotient
>> rule we are to find the dirivitive, but I am stuck. So I have the work I
>> have done so far and if I am correct or not correct in what I have done
>> please let me know. Also below that is the correct answer, but  I haven't
>> reached the answer yet. As I have said I am stuck. Thanks.
>> 
>> 21) p(t)=sqrt t/t-1
>> 
>> (t-1)(t^1/2)-(sqrt t)(1)/(t-1)^2
>> 
>> T^3/2-t^1/2-sqrt t/(t-1)^2
>> 
>> T^3/2-t^1/2-t^1/2/(t-1)^2
>> 
>> T^3/2-2t^1/2/(t-1)^2
>> 
>>  
>> P'(t)=[-sqrt t/2-1/(2*sqrt t)]/(t-1)^2
>> 
>>  
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> 
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