On Thu, Sep 12, 2013 at 5:24 PM, P Purkayastha <[email protected]> wrote:
> On 09/12/2013 10:14 PM, Jotace wrote:
>>
>> Hi all,
>>
>> I'm trying to do an interact to illustrate the curvature of a curve
>> given by y=f(x).
>> Here is the code, but at the end I cannot properly show the function
>> k(x). What's wrong? What should I do?
>>
>>
>> var('x')
>> f(x)=x^4-2*x^2
>> @interact
>> def _(f=input_box(x^4-2*x^2, width=15, label="$f(x)=$"),a=input_box(-2,
>> width=5, label="$a=$"),b=input_box(2, width=5, label="$b=$")):
>> Cf=plot(f,x,-2,2,color='blue', thickness=3)
>> k(x)=abs(diff(f,x,2))/(1+(diff(f,x,1))^2)^(3/2)
>> Ck=plot(k,x,-2,2,color='red', thickness=3)
>> show(Cf+Ck,figsize=6)
>> html('La fonction de courbure est', latex(k))
>>
>>
>> Thanks!
>>
>> JC
>
>
> Try pretty_print instead of html:
>
> pretty_print('La fonction de courbure est', latex(k))
Or try this:
html('La fonction de courbure est $%s$'%latex(k))
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