[Blindmath] Dirivitives

[Alastair Irving]

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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