On Sun, Oct 28, 2012 at 11:22:10AM +1100, David Billinghurst wrote:
> On 28/10/2012 9:59 AM, Daniel Dalton wrote:
> >3. I have two integrals, which must equal 3 and 2 respectively. So I
> >assign the integrated equation to f(x) in maxima and attempt to solve
> >for the two integrals like this simultaneously:
> >f(x):=7*log(x);
> >
> >(%o3) f(x):=7*log(x)
> >(%i4) solve([f(m*n)-f(1)=3, f(m/n)-f(1)=2],[m,n]);
> >(%o4) []
> >
> >How do I find the solution to this? (I need an exact value)
> Here is one approach. I use map to apply exp() to each side of the
> equations
> You could then use solve directly, but there are 49 solutions and
> only one has real roots.
Thank you. And I presume real solutions will be at the end?
This looks good (it works), but is there any benefit to do this over
using to_poly_solve which was suggested in another reply?
Seems it would be less typing in an exam, which is always good.
Thanks for your help,
Daniel