确定对数基地【难度:1级】:

答案1:

determine_base=lambda f:2**f(2)**-1​

答案2:

import math def determine_base(log_func): return math.exp(math.log(20) / log_func(20))​

答案3:

def determine_base(log_func): return 10**(1/log_func(10))​

答案4:

def determine_base(log_func): lo, hi = 1, 1e6 while True: mid = (lo + hi) / 2 l = log_func(mid) if l < 1: lo = mid elif l > 1: hi = mid else: return mid​

答案5:

def determine_base(log_func): return 2**(1/log_func(2))​

答案6:

def determine_base(log_func): min = 1 max = 1000000 guess = 500000 log_guess = log_func(guess) while abs(1 - log_guess) > 1e-11: if log_guess == 1: return guess elif log_guess > 1: max = guess guess = (guess + min) / 2 elif log_guess < 1: min = guess guess = (guess + max) / 2 log_guess = log_func(guess) return guess​

答案7:

def determine_base(log_func): return 8**(1 / log_func(8))​

答案8:

def determine_base(log_func): calc = log_func(2) return 2 ** (1 / calc)​

答案9:

from math import e, exp def determine_base(log): return exp(1/log(e))​

答案10:

from math import exp, e def determine_base(log_func): return exp(1/log_func(e))​

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