[Solved] What is the output of this code?import numpy as np x = np.array([1, 2, 3]) y = x * 2 print(y) — Ans: [2 4 6] | NumPy

NumPy - Array Operations

What is the output of this code?

import numpy as np
x = np.array([1, 2, 3])
y = x * 2
print(y)

A[1 2 3 1 2 3]

B[2 4 6]

C[3 4 5]

D[1 4 9]

Step-by-Step Solution

Solution:

Step 1: Understand vectorized multiplication
Multiplying array x by 2 multiplies each element by 2.
Step 2: Calculate element-wise result
Elements: 1*2=2, 2*2=4, 3*2=6, so result is [2 4 6].
Final Answer:
[2 4 6] -> Option B
Quick Check:
Vectorized multiply result = [2 4 6] [OK]

Quick Trick: Multiplying array by scalar doubles each element [OK]

Common Mistakes:

Master "Array Operations" in NumPy

9 interactive learning modes - each teaches the same concept differently

More NumPy Quizzes

What is the output of this code?