Matlab online IDE: calculate the upper limit of the definite integral

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1. Case introduction

% 定义符号变量 x
syms x;

% 定义函数 f(x) = x
f = x;

% 定义定积分的值 I
I = 2;

% 计算函数 f(x) 在 [0, x] 区间的定积分，并求其反函数 F(x)
F = finverse(int(f, 0, x));

% 使用 vpasolve 函数求解 F(x) - I = 0 的解，并将其转换成浮点数
x_value = double(vpasolve(F - I, x));

% 输出结果 x_value
disp(x_value);

The function of the above code is: calculation function $f(x)=x$ in$[0,$The value of the definite integral in the interval$x$$]$$At\; 2$ o'clock, the upper limit of points$the\; value\; of\; x$ . where syms x defines the symbolic variable x, and f = x defines the function$f\left(x\right)=x$ , I = 2 defines the value of the definite integral, F = finverse(int(f, 0, x)) evaluates the function$f\left(x\right)$ in$[0,x]$ definite integral in the interval, and its inverse function$F\left(x\right)$ , x_value = double(vpasolve(F - I, x)) Use the vpasolve function to solve the equation$F(x)-I=0$ solution, and convert it into a floating point number, disp(x_value) outputs the result x_value.

2. Calculation results