计算并输出数列1 –1/3 + 1/5 - 1/7 + 1/9 - 1/11 + …… + 1/101
时间: 2023-10-03 22:05:06 浏览: 62
这是一个交替求和数列,可以写成以下形式:
1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + ... + (-1)^n/(2n+1)
其中,n为数列的项数,从0开始计数。因为n的范围是0到50,一共有51项,所以:
1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + ... + 1/101
= 1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + ... + (-1)^50/(2*50+1)
= 0.78447893504
所以,数列的和为0.78447893504。
相关问题
C语言计算并输出数列1 –1/3 + 1/5 - 1/7 + 1/9 - 1/11 + …… + 1/101
LinearRegression is a class that inherits from the torch.nn.Module class in PyTorch. It is used to create a linear regression model that can be trained on a given dataset.
The LinearRegression class typically has two main methods:
1. __init__: This method is used to define the architecture of the linear regression model. It takes in the number of input features and output features and initializes the weights and biases of the model.
2. forward: This method defines how the input data is passed through the model to generate the output. It takes in the input data and applies a linear transformation to it using the weights and biases of the model. The output is then returned.
Overall, the LinearRegression class provides a convenient way to create and train a linear regression model in PyTorch.
vb1+1/2-1/3+……+1/n
根据提供的引用内容,这是一个C语言程序,用于计算斐波那契数列的特定求和公式。如果你想要计算vb1+1/2-1/3+……+1/n的值,可以使用以下Python代码:
```python
n = int(input("请输入n的值:"))
sum = 0
for i in range(1, n+1):
if i % 2 == 0:
sum -= 1/i
else:
sum += 1/i
print("vb1+1/2-1/3+……+1/n的值为:", sum)
```
这段代码首先要求用户输入n的值,然后使用for循环计算公式的值。在循环中,如果i是偶数,就减去1/i,否则就加上1/i。最后输出计算结果。