This bug is related to the differentiation function in Origin.
Before apply SR1, this function is correct only for sine ( and other triangle functions), others like y=x^2 cannot get right results.
After apply SR1, you cannot get a correct result for sine (and other triangle functions), however, others like y=x^2 can.To re-produce the bug:
just fill 2 columns, say A, B with Col(A)=0 to 360, and col(B)=sin(col(A)), plot col(B) then choose Analysis->Calcalus->Diff,
The result is a cosine-like curve, however, the maximum is reduced to around 0.02 not the value it should be (should be 1).
However, if you fill the second column with col(A)^2, you can get the right result.
I think it should be the SRs, when apply those SRs, it changed some function relating to differentiation accidentally.
Hope someone can fix this problem as soon as possible, as there could be other functions cannot be correctly derived.
[This message has been edited by tantiger (edited 06-22-2000).]
