Thanks.

I got it.

When I get the polynomial coefficients using TCurveFittingFunction, I can't understand. For example, I have a datasource: ( y = 5 + 3*x + 2 * x^2 ) 1,10 3,32 6,95 8,157 10,235 Using the TCurveFittingFunction, I get the fitting polynomial: y = 0*x + 7*x^2 + 2*x^3 It's not the same as ( y = 5 + 3*x + ...

Tee7.01Beta has the same error.

When I manually add design time packages
to BCB package list ,
the follow error information show:
---------------------------
C++Builder 6

Cannot load package 'Tee7C6.'
It contains unit 'Teeconst,'which is also contained in package 'tee60'
---------------------------

My Email: s_g_a@sina.com