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Gary JW Chen

Taiwan
2 Posts
Posted - 01/28/2018 :  11:05:35 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver.: OriginPro 9.0.0
Operating System:Windows 7 (32 bit)
Hi, I would like to fit the following formula with my experimental data:
y=(0.9+0.2*x+(0.47-0.15*x)*2.72^(-(G+m*x)/592.1))/(1+2.72^(-(G+m*x)/592.1)
But when I click quick check, it shows "y = -- (Math cannot be performed on Text column: )"

What should I do? Please help me, thank you.
Edited by - Gary JW Chen on 01/28/2018 11:10:29 PM

JacquelineHe

287 Posts
Posted - 01/29/2018 :  03:20:24 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi

I think you miss a right parenthesis in your formula.
There are 7 "(" , but only 6 ")" .

Please check and add the right parenthesis, and try again.

Thanks
Jacqueline
OriginLab
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Gary JW Chen

Taiwan
2 Posts
Posted - 01/30/2018 :  01:03:02 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Thank you very much!
It worked perfectly.
I feel so embarrassed.
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