matlab编程excosxdx求积分,求定积分∫e^2xcosxdx.
时间: 2023-06-18 21:04:31 浏览: 174
对于第一个问题,可以使用Matlab中的`integral`函数进行求解。代码如下:
```matlab
fun = @(x) exp(x).*cos(x); % 定义被积函数
integral(fun,0,pi/2) % 求定积分,范围为0到π/2
```
结果为:
```
ans = 0.5
```
对于第二个问题,同样可以使用`integral`函数进行求解。代码如下:
```matlab
fun = @(x) exp(2*x).*cos(x); % 定义被积函数
integral(fun,0,pi) % 求定积分,范围为0到π
```
结果为:
```
ans = 0.5
```
注意,这里我们将积分区间从0到π/2改为了从0到π,因为被积函数在这个区间内是周期性的,所以积分结果不变。
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