mathT.py

# ===================== SUMMARY OF math MODULE =====================
# math module is used for mathematical operations in Python.
# It provides functions for square root, power, factorial, gcd, ceil, floor, etc.
# It also provides constants like math.pi and math.e.
# math.sqrt() gives square root of a number.
# math.pow() gives power but returns answer in float.
# math.floor() gives lower integer value.
# math.ceil() gives upper integer value.
# math.trunc() removes decimal part only.
# math.factorial() gives factorial of a number.
# math.gcd() gives greatest common divisor.
# math.sin(), math.cos(), math.tan() work with angles in radians.
# math.radians() converts degree into radians.
# math.degrees() converts radians into degree.
# ================================================================

import math                                      # importing the math module

print(math.pi)                                   # printing value of pi

print(math.e)                                    # printing value of Euler's number e

print(math.sqrt(25))                             # finding square root of 25

print(math.pow(2, 3))                            # finding 2 raised to power 3, returns float

print(2 ** 3)                                    # finding 2 raised to power 3 using normal power operator

print(math.factorial(5))                         # finding factorial of 5, means 5*4*3*2*1

print(math.gcd(12, 18))                          # finding greatest common divisor of 12 and 18

print(math.lcm(12, 18))                          # finding least common multiple of 12 and 18

print(math.floor(4.9))                           # gives lower integer value, answer is 4

print(math.ceil(4.1))                            # gives upper integer value, answer is 5

print(math.trunc(4.9))                           # removes decimal part, answer is 4

print(math.trunc(-4.9))                          # removes decimal part, answer is -4

print(math.fabs(-10))                            # gives absolute value as float

print(abs(-10))                                  # gives absolute value using built-in function

print(math.isqrt(26))                            # gives integer square root, decimal part removed

print(math.prod([2, 3, 4]))                      # multiplies all values of list, answer is 24

print(math.fsum([0.1, 0.2, 0.3]))                # gives accurate floating point sum

print(sum([0.1, 0.2, 0.3]))                      # normal sum may give small floating point error

print(math.remainder(10, 3))                     # gives IEEE-style remainder

print(10 % 3)                                    # gives normal modulus remainder

print(math.log(10))                              # gives natural log of 10, base e

print(math.log10(100))                           # gives log of 100 with base 10

print(math.log2(8))                              # gives log of 8 with base 2

print(math.exp(2))                               # gives e raised to power 2

degree = 90                                      # storing angle in degree

radian = math.radians(degree)                    # converting degree into radians

print(radian)                                    # printing radian value

print(math.sin(radian))                          # finding sin of 90 degree

print(math.cos(radian))                          # finding cos of 90 degree

print(math.tan(radian))                          # finding tan of 90 degree

print(math.degrees(radian))                      # converting radians back into degrees

print(math.isfinite(100))                        # checks whether number is finite

print(math.isinf(math.inf))                      # checks whether number is infinity

print(math.isnan(math.nan))                      # checks whether value is NaN, means Not a Number

radius = 7                                       # storing radius of circle

area = math.pi * radius * radius                 # calculating area of circle using pi*r*r

print("Area of circle:", area)                   # printing area of circle