Python平均斜率

Question

def mean_slope(f, a, b):
 '''
  Write a python function which returns the average slope of a function f within a range a and b.a < b
'''


print(mean_slope(some_func, 2, 8))

如何编写python函数，它返回函数f在a和b.a

Answer 1

这定义了一个函数mean_slope，给定一个变量f的函数，返回f在带a < b的区间[a, b]上的平均斜率。这是用函数square进行测试的。

def mean_slope(f, a, b):
    """
    given a function of one variable f, returns average slope of f over
    [a, b], a < b
    """
    return (f(b) - f(a)) / (b - a)

def square(x):
    return x * x

print(mean_slope(square, 2, 8))

输出

10.0