#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
ENGG1811 Lecture  

numpy elementwise additional, subtraction, multiplication, division
and exponentiation 
"""
import numpy as np 

array1 = np.array([ [-3.2,  1,  0.5, 5.8], 
                    [   6, -4,  6.2, 7.1],
                    [ 3.8,  5,  2.7, 3.7]])

# %% 
array_add = array1 + 2.0     # Same as 2.0 + array1
array_sub = array1 - 2.0
array_mul = array1 * 2.0     # Same as 2.0 * array1 
array_div_1 = array1 / 2.0 
array_div_2 = 2.0 / array1  
array_power_1 = array1 ** 2 
array_power_2 = 2 ** array1