我使用sympy解决了一些线性方程组：
t=linsolve([f(0.25), f(0.5)], (a1,a2)) #f is function of x, a1, a2
Output: t={(-0.145903479236813, -0.152637485970819)}
如何从t？
访问a1和a2的值答案 0 :(得分：2)
t是set FiniteSet tuple tuple} for a1, a2 in t:
print(a1, a2)
个 function calc() {
//sets all the variables to blank
gpa109 = ""
gpa115 = ""
note = ""
//The value of the GPA radio button input is set in the GPA variable (first button=1, etc...)
GPA = document.data.GPA.value
//The value of the ACT radio button input is set in the ACT variable (first button=1, etc...)
ACT = document.data.ACT.value
//Use if-then statements to assign gpa output values to variables based on GPA and ACT inputs
//gpa output variables are gpa109, gpa115, gpa109120, etc...
//the note in the text box at the end is in variable "note"
if (GPA == 1) {
if (ACT == 1) {
gpa109 = "0.91"
}
}
if (GPA == 1) {
if (ACT == 1) {
gpa115 = "No Data"
}
}
if (GPA == 1) {
if (ACT == 2) {
gpa109 = "1.50"
}
}
if (GPA == 1) {
if (ACT == 2) {
gpa115 = "No Data"
}
}
if (GPA == 2) {
if (ACT == 1) {
gpa109 = "1.68"
}
}
if (GPA == 2) {
if (ACT == 1) {
gpa115 = "No Data"
}
}
if (GPA == 2) {
if (ACT == 2) {
gpa109 = "1.98"
}
}
if (GPA == 2) {
if (ACT == 2) {
gpa115 = "1.27"
}
}
if (GPA == 1) {
if (ACT == 1) {
note = "we are worried about you."
}
}
if (GPA == 1) {
if (ACT == 2) {
note = "slacked off a bit in high school, did you not?"
}
}
if (GPA == 2) {
if (ACT == 1) {
note = "you are a classic bad standardized test taker."
}
}
if (GPA == 2) {
if (ACT == 2) {
note = "you should probably apply to a better college."
}
}
//These statements put all the values determined by the if-then statements into the document
document.data.gpa109.value = gpa109
document.data.gpa115.value = gpa115
document.data.note.value = note
}解决方案<form name="data">
<table COLS=4 cellpadding=2 border=1 align=center>
<tr>
<td COLSPAN="4">
<center><b><font size=+2>
<p>
Advising Tool
</p></font></b>
</center>
</td>
</tr>
<tr>
<td COLSPAN="2">
<center><font size=+1>
<p>
What was your High School GPA?
</p>
</font>
</center>
</td>
<td COLSPAN="2">
<center><font size=+1>
<p>
What was your ACT Math subscore?
<p>
</font>
</center>
</td>
</tr>
<tr>
<td COLSPAN="2">
<center>
<font size=+1>
<P>
<input type="radio" name="GPA" value="1" onclick="calc();"> Less than 3.5<br>
<input type="radio" name="GPA" value="2" onclick="calc();"> 3.5 or greater<br>
</P></font>
</center>
</td>
<td COLSPAN="2">
<center><font size=+1>
<P>
<input type="radio" name="ACT" value="1" onclick="calc();"> Less than 26<br>
<input type="radio" name="ACT" value="2" onclick="calc();"> 26 or greater<br>
</P> </font>
</center>
</td>
</tr>
<tr>
<td COLSPAN="4" align="center">
<font size=+1>
<br>
Over the past 5 years, students with similar high school GPAs and ACT Math<br>scores had the following average GPA in their introductory CHM courses.
<br>
<br>
</font>
</td>
</tr>
<tr>
<td align="right">
Classes Taken
</td>
<td>
Average GPA
</td>
</tr>
<tr>
<td align="right">
CHM 109 Only
</td>
<td>
<input name="gpa109" size="10" type="text">
</td>
<tr>
<td align="right">
CHM 115 Only
</td>
<td>
<input type="text" name="gpa115" size="10">
</td>
<tr>
<td COLSPAN="4" align="center">
<textarea rows="2" cols="100" name="note">
</textarea>
</td>
</tr>
</table>
</form> ，所以你需要迭代它的解决方案。类似的东西：
@ManagedBean Student()答案 1 :(得分：0)
您可以通过将其转换为 tuple 或 list 来访问解决方案集的元素。
t=list(t)[0]
t[0]:-0.145903479236813
t[1]:-0.152637485970819