## 10 Reputation

12 years, 62 days

## interchange rectangular form and polar f...

Maple 15

Hi, I want to know how to change the rectangular form to polar form, and how to manipulate the operation of them, for example the picture below. The angle of polar form contain radian and degree, how to represent them in Maple?Thank you.

## Good curve fitting II...

Maple 15

Hi,@Carl Love sorry for my crosspost, I miss click. I try to reply under your response, but it does not show my reply under your response.

Thank you very much, you solve my problem, the method you provided is useful.

But now another formula need to be fit, previously, I use Excel to do the best_answer_optimization, I want to know if Maple could do it. The formula is as follow ...

## Good curve fitting...

Hi,@Carl Love ,thanks for your help, it's useful. Here, I slightly modify your expression to reach my need. Model:= i0*(exp(1000*(v-i*rs)/n0/(259/100))-1)-i;→ change 100 to 10,

Curve:= plot(eval(NewModel, FIT[2]), v= 0..1): → change v= 0.01..1, because v=0 will give an abrupt jump

The following is the...

## substitute the result of NonlinearFit in...

Maple 15

Hi, I want to substitute the result from NonlinearFit into formula and plot together with raw data.

I have two files v.txt and i.txt , v stands for voltage, i stands for current, using formulato fit my raw data,

The picture is captured from my screen.

## Curve fitting and import data to fitting...

Maple 15

Hi, I have a set of data (see here:I-V_data.xls), voltage and current, which is measured from Keithley semiconductor analyzer, I want to load into Maple(version 15) and using formula as follow to fitting the curve, where I (i.e. current) appear at both right-hand-side and left-hand-side, V (i.e. voltage...

 Page 1 of 1
﻿