@acer 

In these equations,

 e^(-34.32*10^4/t) means exp(-34.32*10^4/t),

I have tried to change e^(-34.32*10^4/t) to exp(-34.32*10^4/t), but they have the same result. I believe they have the numerical solution.

Help me, please.

Thank you!

It is very kind of you to help me, and it really works. I think I am not flexible enough to use maple.

Thank you again to help me.

It is very kind of you to help me, and it really works. I think I am not flexible enough to use maple.

Thank you again to help me.

But if the values are in different length, such as:

m:=table([1=[151，153，160]，2=[157，152，153，150]，3=[161，158，152，155，156]])

What should I do to export it to excel, the export  instruction must be array or matrix.

Please help me, Thank you!

But if the values are in different length, such as:

m:=table([1=[151，153，160]，2=[157，152，153，150]，3=[161，158，152，155，156]])

What should I do to export it to excel, the export  instruction must be array or matrix.

Please help me, Thank you!

If I change to another data, why it doesn't work?

Error is: 

Error, (in axycurve) invalid input: CurveFitting:-ArrayInterpolation expects its 2nd argument, p2, to be of type Or(list, rtable, numeric), but received fsolve(axycurve-cxycurve, 12600 .. 19300)
 

Please help me, Thank you!q4.mw

If I change to another data, why it doesn't work?

Error is: 

Error, (in axycurve) invalid input: CurveFitting:-ArrayInterpolation expects its 2nd argument, p2, to be of type Or(list, rtable, numeric), but received fsolve(axycurve-cxycurve, 12600 .. 19300)
 

Please help me, Thank you!q4.mw

Thank you for your help!

It really help me!

Thank you!

Thank you for your help!

It really help me!

Thank you!

Thank you for your help, I have another question.

If I want r to be an array or matrix, How can I initialize r?

Thank you!

Thank you for your help, I have another question.

If I want r to be an array or matrix, How can I initialize r?

Thank you!

hank you very much for your help, and it really help me a lot.

I have read your program carefully, some of them are not totaly understand.

1．Such as "axycurve := x -> CurveFitting:-ArrayInterpolation(axy, x, method = spline, extrapolate) "

It means I can get the new x and y which were splined. But how can I view value of x, y?

2．> fsolve(axycurve-cxycurve,min(ax)..max(ax));

> fsolve(axycurve-cxycurve,min(cx)..max(cx)); # extrapolation

Why they have different value? They should have the same value no matter from min(ax)..max(ax) or min(cx)..max(cx)

3．I have another question, If I want to know the (x,y) of the intersection, in your help I have calculate the x value, how could I calculate y value?

Thank you!

hank you very much for your help, and it really help me a lot.

I have read your program carefully, some of them are not totaly understand.

1．Such as "axycurve := x -> CurveFitting:-ArrayInterpolation(axy, x, method = spline, extrapolate) "

It means I can get the new x and y which were splined. But how can I view value of x, y?

2．> fsolve(axycurve-cxycurve,min(ax)..max(ax));

> fsolve(axycurve-cxycurve,min(cx)..max(cx)); # extrapolation

Why they have different value? They should have the same value no matter from min(ax)..max(ax) or min(cx)..max(cx)

3．I have another question, If I want to know the (x,y) of the intersection, in your help I have calculate the x value, how could I calculate y value?

Thank you!

Thank you very much for your help!

It really works.  I can't solve this problem without your help!

Thank you so much!

Thank you!

Thank you very much for your help!

It really works.  I can't solve this problem without your help!

Thank you so much!

Thank you!