Python built-in math module knowledge points

The Math module implements a number of mathematical functions for floating-point numbers. These functions are generally a simple encapsulation of functions of the same name in the Platform C Library, so the results of calculations under different platforms may be slightly different and sometimes even very large.

The Python math function must import math
Function description	Instructions	Example
Returns the inverse cosine of x	Math.acos (x)
Returns the inverse hyperbolic cosine of x	Math.acosh (x)
Return x's Inverse chord	Math.asin (x)
Returns the inverse hyperbolic sine of x	Math.asinh (x)
Returns the inverse tangent of X	Math.atan (x)
Return y/x of the arc tangent	Math.atan2 (y,x)
Returns the inverse hyperbolic tangent of x	Math.atanh (x)
Returns the minimum integer of ≧x	Math.ceil (x)	Math.floor (3.4) Results 4
Returns the X value of the same number as Y	Math.copysign (x, y)
Returns the cosine of X	Math.Cos (x)
Returns the hyperbolic cosine of x	Math.cosh (x)
Turn x (arc length) into angle, and radians as inverse function	Math.degrees (x)
Constant E = 2.7128 ...	Math.e
Back to ex, math.e**x.	Math.exp (x)
Returns the absolute value of X	Math.fabs (x)
Back to x!	Math.factorial (x)
Returns the largest integer of ≦x	Math.floor (x)	Math.floor (3.4) Results 3
Returns the remainder of the X-to-y modulo Fmod is similar to%, but the result may be different from%, because the former takes Y to determine the remainder of the symbol, the latter you x to determine the remainder of the symbol.	Math.fmod (x, y)
Returns a 2-tuple (2-tuple) divided by a false number m (float) and an exponent n (int), that is, x = mx2n and ldexp are inverse functions	Math.frexp (x)	Math.frexp (1.625) results (0.8125,1)
Returns the values of the X array and	Math.fsum (x)	Math.frexp ([2,5]) Results 7
Return	Math.hypot (x, y)
If x =±inf is also ±∞ Returns True	Math.isinf (x)
if x = Non (not a number) Returns True	Math.isnan (x)
Return mx2n and frexp are inverse functions	Math.ldexp (M,n)
Return, if not write a set E	Math.log (X,a)
Return	MATH.LOG10 (x)
Return	MATH.LOGLP (x)
Returns the number of decimal parts of x and the integral parts	MATH.MODF (x)
return constant π (3.14159 ...)	Math.PI
Return to XY	Math.pow (x, y)
Turn x (angle) into arc length, with degrees as inverse function	Math.radians (d)
Returns the sine of X	Math.sin (x)
Returns the hyperbolic sine of x	Math.sinh (x)
Return	MATH.SQRT (x)
Returns the tangent of X	Math.tan (x)
Returns the hyperbolic tangent of X	Math.tanh (x)
Returns the integral part of x, equal to int	Math.trunc (x)

Python built-in math module knowledge points