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按fn+f10，huawei/lenovo的f1-f12都是这样，有一个简单的办法判断所按是否就是f10, 就是打开屏幕键盘，对着它按，点fn+f10，然后检查一下电脑上的按键是否一致。

类似huawei电脑的键盘布局

按键后屏幕键盘会有反应，看一下是什么

winkey+r输入 osk回车打开屏幕键盘

int厚的函数要有显式表达式初等函数vpa才有用，不然vpa是废材
25时，int后是显式的，而242869就没有显式了，int后只不过是另一种表达式，而实际上并没有积分出来，vpa后是没有任何作用的，double对于syms表达式作用当然会错，matlab中符号运算只有对于可运算的才有实际意义，比如solve解5次以上含参数代数方程，解了当没有解，又如dsolve解非线性微分方程，都是徒劳
见下：
int(x^(25-1)exp(-x),0,10)

ans =

(3pi^(1/2)erf(10^(1/2)))/4 - (2310^(1/2))/(2exp(10))

>> int(x^(242869-1)exp(-x),0,10)
ans =
- ((321712387581397710^(965324062128729/2251799813685248))/2251799813685248 + 10^(3217123875813977/2251799813685248))/exp(10) - (3105567088172068973424231445233igamma(965324062128729/2251799813685248, 10))/5070602400912917605986812821504 - limit(- exp(-x)(3217123875813977/2251799813685248x^(965324062128729/2251799813685248) + x^(3217123875813977/2251799813685248)) - 3105567088172068973424231445233/5070602400912917605986812821504igamma(965324062128729/2251799813685248, x), x = 0, Right)
所以不行
想算出来也不是难事
int(x^(alpha-1)exp(-x),0,beta)
＝gammainc(beta,alpha)gamma(alpha)
直接算就行
>> gammainc(10,25)gamma(25)
ans =
13277
>> gammainc(10,242869)gamma(242869)
ans =
12645

Figure Windows in Plot Edit ModeThe MATLAB figure window supports a point-and-click editing mode that you can use to customize the appearance of your graph This section describes how to enter plot edit mode and perform basic editing tasks, including selecting, cutting, copying, pasting, moving, and resizing objects and modifying other plot properties The following figure illustrates some capabilities of plot edit mode Simulink/Sources/In1: Provide an input port for a subsystem or modelFor Triggered Subsystems, 'Latch input by delaying outside signal' produces the value of the subsystem input at the previous time stepFor Function-call Subsystems, 'Latch input by copying inside signal' copies the Inport block's output to a buffer before the contents of the subsystem are executedThe other parameters can be used to explicitly specify the input signal attributes

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