Interception points (two) for complicate function

How can I find interception points (two) for two functions, ex: y1=(30).*(((t./7).^(3))./(1+((t./7).^(3)))).*exp(-t./400); , y2 = 20.*t.^10;

I tryed :

Interception=find(abs(y1-y2)<=(eps), but sometimes it taking too much time , because I using this functions in ,,while'' (repeating hundred times).

Answer 1

[madhan ravi]

Just preallocate(search documentation) before loop

[Marko Boskovic]

I need it in while loop.